diff --git a/BUILD b/BUILD
index 7e042b79745..6b86c328b61 100644
--- a/BUILD
+++ b/BUILD
@@ -855,7 +855,6 @@ grpc_cc_library(
         "src/core/lib/debug/stats_data.cc",
         "src/core/lib/event_engine/endpoint_config.cc",
         "src/core/lib/event_engine/event_engine.cc",
-        "src/core/lib/event_engine/slice_allocator.cc",
         "src/core/lib/event_engine/sockaddr.cc",
         "src/core/lib/http/format_request.cc",
         "src/core/lib/http/httpcli.cc",
@@ -2447,6 +2446,7 @@ grpc_cc_library(
         "src/core/ext/transport/chttp2/transport/bin_decoder.cc",
         "src/core/ext/transport/chttp2/transport/bin_encoder.cc",
         "src/core/ext/transport/chttp2/transport/chttp2_plugin.cc",
+        "src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc",
         "src/core/ext/transport/chttp2/transport/chttp2_transport.cc",
         "src/core/ext/transport/chttp2/transport/context_list.cc",
         "src/core/ext/transport/chttp2/transport/flow_control.cc",
@@ -2471,6 +2471,7 @@ grpc_cc_library(
     hdrs = [
         "src/core/ext/transport/chttp2/transport/bin_decoder.h",
         "src/core/ext/transport/chttp2/transport/bin_encoder.h",
+        "src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h",
         "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
         "src/core/ext/transport/chttp2/transport/context_list.h",
         "src/core/ext/transport/chttp2/transport/flow_control.h",
@@ -2492,6 +2493,8 @@ grpc_cc_library(
         "src/core/ext/transport/chttp2/transport/varint.h",
     ],
     external_deps = [
+        "absl/memory",
+        "absl/status",
         "absl/strings:str_format",
         "absl/strings",
     ],
diff --git a/BUILD.gn b/BUILD.gn
index e27eb91d815..29b2a471dc7 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -397,6 +397,8 @@ config("grpc_config") {
         "src/core/ext/transport/chttp2/transport/bin_encoder.cc",
         "src/core/ext/transport/chttp2/transport/bin_encoder.h",
         "src/core/ext/transport/chttp2/transport/chttp2_plugin.cc",
+        "src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc",
+        "src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h",
         "src/core/ext/transport/chttp2/transport/chttp2_transport.cc",
         "src/core/ext/transport/chttp2/transport/chttp2_transport.h",
         "src/core/ext/transport/chttp2/transport/context_list.cc",
@@ -868,7 +870,6 @@ config("grpc_config") {
         "src/core/lib/event_engine/endpoint_config.cc",
         "src/core/lib/event_engine/endpoint_config_internal.h",
         "src/core/lib/event_engine/event_engine.cc",
-        "src/core/lib/event_engine/slice_allocator.cc",
         "src/core/lib/event_engine/sockaddr.cc",
         "src/core/lib/event_engine/sockaddr.h",
         "src/core/lib/gprpp/atomic.h",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ce65542967..3bdc3287379 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1599,6 +1599,7 @@ add_library(grpc
   src/core/ext/transport/chttp2/transport/bin_decoder.cc
   src/core/ext/transport/chttp2/transport/bin_encoder.cc
   src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
+  src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
   src/core/ext/transport/chttp2/transport/chttp2_transport.cc
   src/core/ext/transport/chttp2/transport/context_list.cc
   src/core/ext/transport/chttp2/transport/flow_control.cc
@@ -1834,7 +1835,6 @@ add_library(grpc
   src/core/lib/debug/trace.cc
   src/core/lib/event_engine/endpoint_config.cc
   src/core/lib/event_engine/event_engine.cc
-  src/core/lib/event_engine/slice_allocator.cc
   src/core/lib/event_engine/sockaddr.cc
   src/core/lib/http/format_request.cc
   src/core/lib/http/httpcli.cc
@@ -2419,6 +2419,7 @@ add_library(grpc_unsecure
   src/core/ext/transport/chttp2/transport/bin_decoder.cc
   src/core/ext/transport/chttp2/transport/bin_encoder.cc
   src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
+  src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
   src/core/ext/transport/chttp2/transport/chttp2_transport.cc
   src/core/ext/transport/chttp2/transport/context_list.cc
   src/core/ext/transport/chttp2/transport/flow_control.cc
@@ -2471,7 +2472,6 @@ add_library(grpc_unsecure
   src/core/lib/debug/trace.cc
   src/core/lib/event_engine/endpoint_config.cc
   src/core/lib/event_engine/event_engine.cc
-  src/core/lib/event_engine/slice_allocator.cc
   src/core/lib/event_engine/sockaddr.cc
   src/core/lib/http/format_request.cc
   src/core/lib/http/httpcli.cc
diff --git a/Makefile b/Makefile
index 978488cee22..313a4efa14f 100644
--- a/Makefile
+++ b/Makefile
@@ -1136,6 +1136,7 @@ LIBGRPC_SRC = \
     src/core/ext/transport/chttp2/transport/bin_decoder.cc \
     src/core/ext/transport/chttp2/transport/bin_encoder.cc \
     src/core/ext/transport/chttp2/transport/chttp2_plugin.cc \
+    src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc \
     src/core/ext/transport/chttp2/transport/chttp2_transport.cc \
     src/core/ext/transport/chttp2/transport/context_list.cc \
     src/core/ext/transport/chttp2/transport/flow_control.cc \
@@ -1371,7 +1372,6 @@ LIBGRPC_SRC = \
     src/core/lib/debug/trace.cc \
     src/core/lib/event_engine/endpoint_config.cc \
     src/core/lib/event_engine/event_engine.cc \
-    src/core/lib/event_engine/slice_allocator.cc \
     src/core/lib/event_engine/sockaddr.cc \
     src/core/lib/http/format_request.cc \
     src/core/lib/http/httpcli.cc \
@@ -1807,6 +1807,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/ext/transport/chttp2/transport/bin_decoder.cc \
     src/core/ext/transport/chttp2/transport/bin_encoder.cc \
     src/core/ext/transport/chttp2/transport/chttp2_plugin.cc \
+    src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc \
     src/core/ext/transport/chttp2/transport/chttp2_transport.cc \
     src/core/ext/transport/chttp2/transport/context_list.cc \
     src/core/ext/transport/chttp2/transport/flow_control.cc \
@@ -1859,7 +1860,6 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/debug/trace.cc \
     src/core/lib/event_engine/endpoint_config.cc \
     src/core/lib/event_engine/event_engine.cc \
-    src/core/lib/event_engine/slice_allocator.cc \
     src/core/lib/event_engine/sockaddr.cc \
     src/core/lib/http/format_request.cc \
     src/core/lib/http/httpcli.cc \
diff --git a/build_autogenerated.yaml b/build_autogenerated.yaml
index c37fff03ed9..b27d56511d4 100644
--- a/build_autogenerated.yaml
+++ b/build_autogenerated.yaml
@@ -489,6 +489,7 @@ libs:
   - src/core/ext/transport/chttp2/server/chttp2_server.h
   - src/core/ext/transport/chttp2/transport/bin_decoder.h
   - src/core/ext/transport/chttp2/transport/bin_encoder.h
+  - src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h
   - src/core/ext/transport/chttp2/transport/chttp2_transport.h
   - src/core/ext/transport/chttp2/transport/context_list.h
   - src/core/ext/transport/chttp2/transport/flow_control.h
@@ -1016,6 +1017,7 @@ libs:
   - src/core/ext/transport/chttp2/transport/bin_decoder.cc
   - src/core/ext/transport/chttp2/transport/bin_encoder.cc
   - src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
+  - src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
   - src/core/ext/transport/chttp2/transport/chttp2_transport.cc
   - src/core/ext/transport/chttp2/transport/context_list.cc
   - src/core/ext/transport/chttp2/transport/flow_control.cc
@@ -1251,7 +1253,6 @@ libs:
   - src/core/lib/debug/trace.cc
   - src/core/lib/event_engine/endpoint_config.cc
   - src/core/lib/event_engine/event_engine.cc
-  - src/core/lib/event_engine/slice_allocator.cc
   - src/core/lib/event_engine/sockaddr.cc
   - src/core/lib/http/format_request.cc
   - src/core/lib/http/httpcli.cc
@@ -1699,6 +1700,7 @@ libs:
   - src/core/ext/transport/chttp2/server/chttp2_server.h
   - src/core/ext/transport/chttp2/transport/bin_decoder.h
   - src/core/ext/transport/chttp2/transport/bin_encoder.h
+  - src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h
   - src/core/ext/transport/chttp2/transport/chttp2_transport.h
   - src/core/ext/transport/chttp2/transport/context_list.h
   - src/core/ext/transport/chttp2/transport/flow_control.h
@@ -1960,6 +1962,7 @@ libs:
   - src/core/ext/transport/chttp2/transport/bin_decoder.cc
   - src/core/ext/transport/chttp2/transport/bin_encoder.cc
   - src/core/ext/transport/chttp2/transport/chttp2_plugin.cc
+  - src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
   - src/core/ext/transport/chttp2/transport/chttp2_transport.cc
   - src/core/ext/transport/chttp2/transport/context_list.cc
   - src/core/ext/transport/chttp2/transport/flow_control.cc
@@ -2012,7 +2015,6 @@ libs:
   - src/core/lib/debug/trace.cc
   - src/core/lib/event_engine/endpoint_config.cc
   - src/core/lib/event_engine/event_engine.cc
-  - src/core/lib/event_engine/slice_allocator.cc
   - src/core/lib/event_engine/sockaddr.cc
   - src/core/lib/http/format_request.cc
   - src/core/lib/http/httpcli.cc
diff --git a/config.m4 b/config.m4
index 4d76b476cfd..1eb9629bdb4 100644
--- a/config.m4
+++ b/config.m4
@@ -130,6 +130,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/ext/transport/chttp2/transport/bin_decoder.cc \
     src/core/ext/transport/chttp2/transport/bin_encoder.cc \
     src/core/ext/transport/chttp2/transport/chttp2_plugin.cc \
+    src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc \
     src/core/ext/transport/chttp2/transport/chttp2_transport.cc \
     src/core/ext/transport/chttp2/transport/context_list.cc \
     src/core/ext/transport/chttp2/transport/flow_control.cc \
@@ -378,7 +379,6 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/debug/trace.cc \
     src/core/lib/event_engine/endpoint_config.cc \
     src/core/lib/event_engine/event_engine.cc \
-    src/core/lib/event_engine/slice_allocator.cc \
     src/core/lib/event_engine/sockaddr.cc \
     src/core/lib/gpr/alloc.cc \
     src/core/lib/gpr/atm.cc \
diff --git a/config.w32 b/config.w32
index 699e917a675..7b8d059d3be 100644
--- a/config.w32
+++ b/config.w32
@@ -96,6 +96,7 @@ if (PHP_GRPC != "no") {
     "src\\core\\ext\\transport\\chttp2\\transport\\bin_decoder.cc " +
     "src\\core\\ext\\transport\\chttp2\\transport\\bin_encoder.cc " +
     "src\\core\\ext\\transport\\chttp2\\transport\\chttp2_plugin.cc " +
+    "src\\core\\ext\\transport\\chttp2\\transport\\chttp2_slice_allocator.cc " +
     "src\\core\\ext\\transport\\chttp2\\transport\\chttp2_transport.cc " +
     "src\\core\\ext\\transport\\chttp2\\transport\\context_list.cc " +
     "src\\core\\ext\\transport\\chttp2\\transport\\flow_control.cc " +
@@ -344,7 +345,6 @@ if (PHP_GRPC != "no") {
     "src\\core\\lib\\debug\\trace.cc " +
     "src\\core\\lib\\event_engine\\endpoint_config.cc " +
     "src\\core\\lib\\event_engine\\event_engine.cc " +
-    "src\\core\\lib\\event_engine\\slice_allocator.cc " +
     "src\\core\\lib\\event_engine\\sockaddr.cc " +
     "src\\core\\lib\\gpr\\alloc.cc " +
     "src\\core\\lib\\gpr\\atm.cc " +
diff --git a/gRPC-C++.podspec b/gRPC-C++.podspec
index dd5d6819c0c..b8d7afb2fb6 100644
--- a/gRPC-C++.podspec
+++ b/gRPC-C++.podspec
@@ -269,6 +269,7 @@ Pod::Spec.new do |s|
                       'src/core/ext/transport/chttp2/server/chttp2_server.h',
                       'src/core/ext/transport/chttp2/transport/bin_decoder.h',
                       'src/core/ext/transport/chttp2/transport/bin_encoder.h',
+                      'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h',
                       'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
                       'src/core/ext/transport/chttp2/transport/context_list.h',
                       'src/core/ext/transport/chttp2/transport/flow_control.h',
@@ -922,6 +923,7 @@ Pod::Spec.new do |s|
                               'src/core/ext/transport/chttp2/server/chttp2_server.h',
                               'src/core/ext/transport/chttp2/transport/bin_decoder.h',
                               'src/core/ext/transport/chttp2/transport/bin_encoder.h',
+                              'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h',
                               'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
                               'src/core/ext/transport/chttp2/transport/context_list.h',
                               'src/core/ext/transport/chttp2/transport/flow_control.h',
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 98307b8e291..60c9187d664 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -350,6 +350,8 @@ Pod::Spec.new do |s|
                       'src/core/ext/transport/chttp2/transport/bin_encoder.cc',
                       'src/core/ext/transport/chttp2/transport/bin_encoder.h',
                       'src/core/ext/transport/chttp2/transport/chttp2_plugin.cc',
+                      'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc',
+                      'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h',
                       'src/core/ext/transport/chttp2/transport/chttp2_transport.cc',
                       'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
                       'src/core/ext/transport/chttp2/transport/context_list.cc',
@@ -847,7 +849,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/event_engine/endpoint_config.cc',
                       'src/core/lib/event_engine/endpoint_config_internal.h',
                       'src/core/lib/event_engine/event_engine.cc',
-                      'src/core/lib/event_engine/slice_allocator.cc',
                       'src/core/lib/event_engine/sockaddr.cc',
                       'src/core/lib/event_engine/sockaddr.h',
                       'src/core/lib/gpr/alloc.cc',
@@ -1502,6 +1503,7 @@ Pod::Spec.new do |s|
                               'src/core/ext/transport/chttp2/server/chttp2_server.h',
                               'src/core/ext/transport/chttp2/transport/bin_decoder.h',
                               'src/core/ext/transport/chttp2/transport/bin_encoder.h',
+                              'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h',
                               'src/core/ext/transport/chttp2/transport/chttp2_transport.h',
                               'src/core/ext/transport/chttp2/transport/context_list.h',
                               'src/core/ext/transport/chttp2/transport/flow_control.h',
diff --git a/grpc.gemspec b/grpc.gemspec
index 7ba6fa9e30e..c6ffbdb47a2 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -265,6 +265,8 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/ext/transport/chttp2/transport/bin_encoder.cc )
   s.files += %w( src/core/ext/transport/chttp2/transport/bin_encoder.h )
   s.files += %w( src/core/ext/transport/chttp2/transport/chttp2_plugin.cc )
+  s.files += %w( src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc )
+  s.files += %w( src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h )
   s.files += %w( src/core/ext/transport/chttp2/transport/chttp2_transport.cc )
   s.files += %w( src/core/ext/transport/chttp2/transport/chttp2_transport.h )
   s.files += %w( src/core/ext/transport/chttp2/transport/context_list.cc )
@@ -762,7 +764,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/event_engine/endpoint_config.cc )
   s.files += %w( src/core/lib/event_engine/endpoint_config_internal.h )
   s.files += %w( src/core/lib/event_engine/event_engine.cc )
-  s.files += %w( src/core/lib/event_engine/slice_allocator.cc )
   s.files += %w( src/core/lib/event_engine/sockaddr.cc )
   s.files += %w( src/core/lib/event_engine/sockaddr.h )
   s.files += %w( src/core/lib/gpr/alloc.cc )
diff --git a/grpc.gyp b/grpc.gyp
index ad665f72dce..83ae7294601 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -563,6 +563,7 @@
         'src/core/ext/transport/chttp2/transport/bin_decoder.cc',
         'src/core/ext/transport/chttp2/transport/bin_encoder.cc',
         'src/core/ext/transport/chttp2/transport/chttp2_plugin.cc',
+        'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc',
         'src/core/ext/transport/chttp2/transport/chttp2_transport.cc',
         'src/core/ext/transport/chttp2/transport/context_list.cc',
         'src/core/ext/transport/chttp2/transport/flow_control.cc',
@@ -798,7 +799,6 @@
         'src/core/lib/debug/trace.cc',
         'src/core/lib/event_engine/endpoint_config.cc',
         'src/core/lib/event_engine/event_engine.cc',
-        'src/core/lib/event_engine/slice_allocator.cc',
         'src/core/lib/event_engine/sockaddr.cc',
         'src/core/lib/http/format_request.cc',
         'src/core/lib/http/httpcli.cc',
@@ -1206,6 +1206,7 @@
         'src/core/ext/transport/chttp2/transport/bin_decoder.cc',
         'src/core/ext/transport/chttp2/transport/bin_encoder.cc',
         'src/core/ext/transport/chttp2/transport/chttp2_plugin.cc',
+        'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc',
         'src/core/ext/transport/chttp2/transport/chttp2_transport.cc',
         'src/core/ext/transport/chttp2/transport/context_list.cc',
         'src/core/ext/transport/chttp2/transport/flow_control.cc',
@@ -1258,7 +1259,6 @@
         'src/core/lib/debug/trace.cc',
         'src/core/lib/event_engine/endpoint_config.cc',
         'src/core/lib/event_engine/event_engine.cc',
-        'src/core/lib/event_engine/slice_allocator.cc',
         'src/core/lib/event_engine/sockaddr.cc',
         'src/core/lib/http/format_request.cc',
         'src/core/lib/http/httpcli.cc',
diff --git a/include/grpc/event_engine/event_engine.h b/include/grpc/event_engine/event_engine.h
index af932aeb431..1fa8e43a5fa 100644
--- a/include/grpc/event_engine/event_engine.h
+++ b/include/grpc/event_engine/event_engine.h
@@ -80,7 +80,7 @@ class EventEngine {
   using Callback = std::function<void(absl::Status)>;
   /// A callback handle, used to cancel a callback.
   struct TaskHandle {
-    intptr_t key;
+    intptr_t keys[2];
   };
   /// A thin wrapper around a platform-specific sockaddr type. A sockaddr struct
   /// exists on all platforms that gRPC supports.
@@ -127,10 +127,8 @@ class EventEngine {
     ///
     /// For failed read operations, implementations should pass the appropriate
     /// statuses to \a on_read. For example, callbacks might expect to receive
-    /// DEADLINE_EXCEEDED when the deadline is exceeded, and CANCELLED on
-    /// endpoint shutdown.
-    virtual void Read(Callback on_read, SliceBuffer* buffer,
-                      absl::Time deadline) = 0;
+    /// CANCELLED on endpoint shutdown.
+    virtual void Read(Callback on_read, SliceBuffer* buffer) = 0;
     /// Write data out on the connection.
     ///
     /// \a on_writable is called when the connection is ready for more data. The
@@ -140,15 +138,13 @@ class EventEngine {
     ///
     /// For failed write operations, implementations should pass the appropriate
     /// statuses to \a on_writable. For example, callbacks might expect to
-    /// receive DEADLINE_EXCEEDED when the deadline is exceeded, and CANCELLED
-    /// on endpoint shutdown.
-    virtual void Write(Callback on_writable, SliceBuffer* data,
-                       absl::Time deadline) = 0;
+    /// receive CANCELLED on endpoint shutdown.
+    virtual void Write(Callback on_writable, SliceBuffer* data) = 0;
     /// These methods return an address in the format described in DNSResolver.
     /// The returned values are owned by the Endpoint and are expected to remain
     /// valid for the life of the Endpoint.
-    virtual const ResolvedAddress* GetPeerAddress() const = 0;
-    virtual const ResolvedAddress* GetLocalAddress() const = 0;
+    virtual const ResolvedAddress& GetPeerAddress() const = 0;
+    virtual const ResolvedAddress& GetLocalAddress() const = 0;
   };
 
   /// Called when a new connection is established.
@@ -197,7 +193,7 @@ class EventEngine {
   virtual absl::StatusOr<std::unique_ptr<Listener>> CreateListener(
       Listener::AcceptCallback on_accept, Callback on_shutdown,
       const EndpointConfig& args,
-      SliceAllocatorFactory slice_allocator_factory) = 0;
+      std::unique_ptr<SliceAllocatorFactory> slice_allocator_factory) = 0;
   /// Creates a client network connection to a remote network listener.
   ///
   /// \a Connect may return an error status immediately if there was a failure
@@ -214,7 +210,7 @@ class EventEngine {
   virtual absl::Status Connect(OnConnectCallback on_connect,
                                const ResolvedAddress& addr,
                                const EndpointConfig& args,
-                               SliceAllocator slice_allocator,
+                               std::unique_ptr<SliceAllocator> slice_allocator,
                                absl::Time deadline) = 0;
 
   /// The DNSResolver that provides asynchronous resolution.
@@ -222,7 +218,7 @@ class EventEngine {
    public:
     /// A task handle for DNS Resolution requests.
     struct LookupTaskHandle {
-      intptr_t key;
+      intptr_t key[2];
     };
     /// A DNS SRV record type.
     struct SRVRecord {
diff --git a/include/grpc/event_engine/slice_allocator.h b/include/grpc/event_engine/slice_allocator.h
index f7525411176..96c1d178069 100644
--- a/include/grpc/event_engine/slice_allocator.h
+++ b/include/grpc/event_engine/slice_allocator.h
@@ -37,18 +37,8 @@ class SliceBuffer {
 
 class SliceAllocator {
  public:
-  // gRPC-internal constructor
-  explicit SliceAllocator(grpc_resource_user* user);
-  // Not copyable
-  SliceAllocator(SliceAllocator& other) = delete;
-  SliceAllocator& operator=(const SliceAllocator& other) = delete;
-  // Moveable
-  SliceAllocator(SliceAllocator&& other) noexcept;
-  SliceAllocator& operator=(SliceAllocator&& other) noexcept;
-  ~SliceAllocator();
-
-  using AllocateCallback =
-      std::function<void(absl::Status, SliceBuffer* buffer)>;
+  using AllocateCallback = std::function<void(absl::Status)>;
+  virtual ~SliceAllocator() = default;
   /// Requests \a size bytes from gRPC, and populates \a dest with the allocated
   /// slices. Ownership of the \a SliceBuffer is not transferred.
   ///
@@ -57,32 +47,17 @@ class SliceAllocator {
   /// interrupted to attempt to reclaim memory from participating gRPC
   /// internals. When there is sufficient memory available, slice allocation
   /// proceeds as normal.
-  absl::Status Allocate(size_t size, SliceBuffer* dest,
-                        SliceAllocator::AllocateCallback cb);
-
- private:
-  grpc_resource_user* resource_user_;
+  virtual absl::Status Allocate(size_t size, SliceBuffer* dest,
+                                SliceAllocator::AllocateCallback cb) = 0;
 };
 
 class SliceAllocatorFactory {
  public:
-  // gRPC-internal constructor
-  explicit SliceAllocatorFactory(grpc_resource_quota* quota);
-  // Not copyable
-  SliceAllocatorFactory(SliceAllocatorFactory& other) = delete;
-  SliceAllocatorFactory& operator=(const SliceAllocatorFactory& other) = delete;
-  // Moveable
-  SliceAllocatorFactory(SliceAllocatorFactory&& other) noexcept;
-  SliceAllocatorFactory& operator=(SliceAllocatorFactory&& other) noexcept;
-  ~SliceAllocatorFactory();
-
+  virtual ~SliceAllocatorFactory() = default;
   /// On Endpoint creation, call \a CreateSliceAllocator with the name of the
-  /// endpoint peer (a URI string, most likely). Note: \a peer_name must outlive
-  /// the Endpoint.
-  SliceAllocator CreateSliceAllocator(absl::string_view peer_name);
-
- private:
-  grpc_resource_quota* resource_quota_;
+  /// endpoint peer (a URI string, most likely).
+  virtual std::unique_ptr<SliceAllocator> CreateSliceAllocator(
+      absl::string_view peer_name) = 0;
 };
 
 }  // namespace experimental
diff --git a/package.xml b/package.xml
index 896018a9d62..3d21edc3df1 100644
--- a/package.xml
+++ b/package.xml
@@ -245,6 +245,8 @@
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/bin_encoder.cc" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/bin_encoder.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/chttp2_plugin.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/chttp2_transport.cc" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/chttp2_transport.h" role="src" />
     <file baseinstalldir="/" name="src/core/ext/transport/chttp2/transport/context_list.cc" role="src" />
@@ -742,7 +744,6 @@
     <file baseinstalldir="/" name="src/core/lib/event_engine/endpoint_config.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/endpoint_config_internal.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/event_engine.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/event_engine/slice_allocator.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/sockaddr.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/sockaddr.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/gpr/alloc.cc" role="src" />
diff --git a/src/core/lib/event_engine/slice_allocator.cc b/src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
similarity index 52%
rename from src/core/lib/event_engine/slice_allocator.cc
rename to src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
index ccf9facb490..1daad25bce0 100644
--- a/src/core/lib/event_engine/slice_allocator.cc
+++ b/src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc
@@ -17,71 +17,48 @@
 
 #include <functional>
 
+#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 
+#include "src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h"
 #include "src/core/lib/iomgr/resource_quota.h"
 
 namespace grpc_event_engine {
 namespace experimental {
 
-SliceAllocator::SliceAllocator(grpc_resource_user* user)
-    : resource_user_(user) {
-  grpc_resource_user_ref(resource_user_);
-};
+Chttp2SliceAllocator::Chttp2SliceAllocator(grpc_resource_user* user)
+    : resource_user_(user) {}
 
-SliceAllocator::~SliceAllocator() {
+Chttp2SliceAllocator::~Chttp2SliceAllocator() {
   if (resource_user_ != nullptr) {
     grpc_resource_user_unref(resource_user_);
   }
-};
-
-SliceAllocator::SliceAllocator(SliceAllocator&& other) noexcept
-    : resource_user_(other.resource_user_) {
-  other.resource_user_ = nullptr;
-}
-
-SliceAllocator& SliceAllocator::operator=(SliceAllocator&& other) noexcept {
-  resource_user_ = other.resource_user_;
-  other.resource_user_ = nullptr;
-  return *this;
 }
 
-absl::Status SliceAllocator::Allocate(size_t size, SliceBuffer* dest,
-                                      SliceAllocator::AllocateCallback cb) {
+absl::Status Chttp2SliceAllocator::Allocate(
+    size_t size, SliceBuffer* dest, SliceAllocator::AllocateCallback cb) {
   // TODO(hork): merge the implementation from the uv-ee branch.
   (void)size;
   (void)dest;
   (void)cb;
   return absl::OkStatus();
-};
+}
 
-SliceAllocatorFactory::SliceAllocatorFactory(grpc_resource_quota* quota)
+Chttp2SliceAllocatorFactory::Chttp2SliceAllocatorFactory(
+    grpc_resource_quota* quota)
     : resource_quota_(quota) {
   grpc_resource_quota_ref_internal(resource_quota_);
-};
+}
 
-SliceAllocatorFactory::~SliceAllocatorFactory() {
+Chttp2SliceAllocatorFactory::~Chttp2SliceAllocatorFactory() {
   if (resource_quota_ != nullptr) {
     grpc_resource_quota_unref_internal(resource_quota_);
   }
 }
 
-SliceAllocatorFactory::SliceAllocatorFactory(
-    SliceAllocatorFactory&& other) noexcept
-    : resource_quota_(other.resource_quota_) {
-  other.resource_quota_ = nullptr;
-}
-
-SliceAllocatorFactory& SliceAllocatorFactory::operator=(
-    SliceAllocatorFactory&& other) noexcept {
-  resource_quota_ = other.resource_quota_;
-  other.resource_quota_ = nullptr;
-  return *this;
-}
-
-SliceAllocator SliceAllocatorFactory::CreateSliceAllocator(
-    absl::string_view peer_name) {
-  return SliceAllocator(
+std::unique_ptr<SliceAllocator>
+Chttp2SliceAllocatorFactory::CreateSliceAllocator(absl::string_view peer_name) {
+  return absl::make_unique<Chttp2SliceAllocator>(
       grpc_resource_user_create(resource_quota_, peer_name.data()));
 }
 
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h b/src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h
new file mode 100644
index 00000000000..5e37b8eb9d1
--- /dev/null
+++ b/src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h
@@ -0,0 +1,74 @@
+// Copyright 2021 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_SLICE_ALLOCATOR_H
+#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_SLICE_ALLOCATOR_H
+
+#include <grpc/support/port_platform.h>
+
+#include "grpc/event_engine/slice_allocator.h"
+
+#include <functional>
+
+#include "absl/status/status.h"
+
+#include "src/core/lib/iomgr/resource_quota.h"
+
+namespace grpc_event_engine {
+namespace experimental {
+
+class Chttp2SliceAllocator
+    : public grpc_event_engine::experimental::SliceAllocator {
+ public:
+  /// gRPC-internal constructor. Takes ownership of a resource_user ref from the
+  /// caller.
+  explicit Chttp2SliceAllocator(grpc_resource_user* user);
+  // Not copyable
+  Chttp2SliceAllocator(Chttp2SliceAllocator& other) = delete;
+  Chttp2SliceAllocator& operator=(const Chttp2SliceAllocator& other) = delete;
+  // Not Moveable
+  Chttp2SliceAllocator(Chttp2SliceAllocator&& other) = delete;
+  Chttp2SliceAllocator& operator=(Chttp2SliceAllocator&& other) = delete;
+  ~Chttp2SliceAllocator() override;
+  absl::Status Allocate(size_t size, SliceBuffer* dest,
+                        SliceAllocator::AllocateCallback cb) override;
+
+ private:
+  grpc_resource_user* resource_user_;
+};
+
+class Chttp2SliceAllocatorFactory
+    : public grpc_event_engine::experimental::SliceAllocatorFactory {
+ public:
+  // gRPC-internal constructor
+  explicit Chttp2SliceAllocatorFactory(grpc_resource_quota* quota);
+  // Not copyable
+  Chttp2SliceAllocatorFactory(Chttp2SliceAllocatorFactory& other) = delete;
+  Chttp2SliceAllocatorFactory& operator=(
+      const Chttp2SliceAllocatorFactory& other) = delete;
+  // Not Moveable
+  Chttp2SliceAllocatorFactory(Chttp2SliceAllocatorFactory&& other) = delete;
+  Chttp2SliceAllocatorFactory& operator=(Chttp2SliceAllocatorFactory&& other) =
+      delete;
+  ~Chttp2SliceAllocatorFactory() override;
+  std::unique_ptr<SliceAllocator> CreateSliceAllocator(
+      absl::string_view peer_name) override;
+
+ private:
+  grpc_resource_quota* resource_quota_;
+};
+
+}  // namespace experimental
+}  // namespace grpc_event_engine
+
+#endif  // GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_CHTTP2_SLICE_ALLOCATOR_H
diff --git a/src/core/lib/iomgr/event_engine/endpoint.cc b/src/core/lib/iomgr/event_engine/endpoint.cc
index ddd9566cdc0..3de39a4d270 100644
--- a/src/core/lib/iomgr/event_engine/endpoint.cc
+++ b/src/core/lib/iomgr/event_engine/endpoint.cc
@@ -59,7 +59,7 @@ void endpoint_read(grpc_endpoint* ep, grpc_slice_buffer* slices,
         exec_ctx.Flush();
         grpc_pollset_ee_broadcast_event();
       },
-      read_buffer, absl::InfiniteFuture());
+      read_buffer);
 }
 
 void endpoint_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
@@ -83,7 +83,7 @@ void endpoint_write(grpc_endpoint* ep, grpc_slice_buffer* slices,
         exec_ctx.Flush();
         grpc_pollset_ee_broadcast_event();
       },
-      write_buffer, absl::InfiniteFuture());
+      write_buffer);
 }
 void endpoint_add_to_pollset(grpc_endpoint* /* ep */,
                              grpc_pollset* /* pollset */) {}
@@ -123,9 +123,8 @@ absl::string_view endpoint_get_peer(grpc_endpoint* ep) {
     return "";
   }
   if (eeep->peer_address.empty()) {
-    const EventEngine::ResolvedAddress* addr = eeep->endpoint->GetPeerAddress();
-    GPR_ASSERT(addr != nullptr);
-    eeep->peer_address = ResolvedAddressToURI(*addr);
+    const EventEngine::ResolvedAddress& addr = eeep->endpoint->GetPeerAddress();
+    eeep->peer_address = ResolvedAddressToURI(addr);
   }
   return eeep->peer_address;
 }
@@ -136,10 +135,9 @@ absl::string_view endpoint_get_local_address(grpc_endpoint* ep) {
     return "";
   }
   if (eeep->local_address.empty()) {
-    const EventEngine::ResolvedAddress* addr =
+    const EventEngine::ResolvedAddress& addr =
         eeep->endpoint->GetLocalAddress();
-    GPR_ASSERT(addr != nullptr);
-    eeep->local_address = ResolvedAddressToURI(*addr);
+    eeep->local_address = ResolvedAddressToURI(addr);
   }
   return eeep->local_address;
 }
diff --git a/src/core/lib/iomgr/event_engine/tcp.cc b/src/core/lib/iomgr/event_engine/tcp.cc
index 2815251b16e..e119dfc2c12 100644
--- a/src/core/lib/iomgr/event_engine/tcp.cc
+++ b/src/core/lib/iomgr/event_engine/tcp.cc
@@ -38,20 +38,36 @@ using ::grpc_event_engine::experimental::EventEngine;
 using ::grpc_event_engine::experimental::GrpcClosureToCallback;
 using ::grpc_event_engine::experimental::SliceAllocator;
 using ::grpc_event_engine::experimental::SliceAllocatorFactory;
+using ::grpc_event_engine::experimental::SliceBuffer;
 }  // namespace
 
+// TODO(hork): remove these classes in PR #26643, when the iomgr APIs change to
+// accept SliceAllocators and SliceAllocatorFactory(ie)s. In the meantime, the
+// libuv work has temporary implementations as well.
+class NoopSliceAllocator : public SliceAllocator {
+ public:
+  absl::Status Allocate(size_t size, SliceBuffer* dest,
+                        SliceAllocator::AllocateCallback cb) {
+    return absl::OkStatus();
+  }
+};
+
+class NoopSliceAllocatorFactory : public SliceAllocatorFactory {
+ public:
+  std::unique_ptr<SliceAllocator> CreateSliceAllocator(
+      absl::string_view peer_name) {
+    return absl::make_unique<NoopSliceAllocator>();
+  };
+};
+
 struct grpc_tcp_server {
-  grpc_tcp_server(std::unique_ptr<EventEngine::Listener> listener,
-                  grpc_resource_quota* rq)
+  explicit grpc_tcp_server(std::unique_ptr<EventEngine::Listener> listener)
       : refcount(1, GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace) ? "tcp" : nullptr),
-        listener(std::move(listener)),
-        resource_quota(rq) {
+        listener(std::move(listener)) {
     shutdown_starting.head = nullptr;
     shutdown_starting.tail = nullptr;
   };
   ~grpc_tcp_server() {
-    // TODO(nnoble): see if we can handle this in ~SliceAllocatorFactory
-    grpc_resource_quota_unref_internal(resource_quota);
     grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &shutdown_starting);
     grpc_core::ExecCtx::Get()->Flush();
   }
@@ -59,7 +75,6 @@ struct grpc_tcp_server {
   grpc_core::Mutex mu;
   std::unique_ptr<EventEngine::Listener> listener;
   grpc_closure_list shutdown_starting ABSL_GUARDED_BY(mu);
-  grpc_resource_quota* resource_quota;
   grpc_tcp_server_cb on_accept_internal;
   void* on_accept_internal_arg;
 };
@@ -99,7 +114,9 @@ void tcp_connect(grpc_closure* on_connect, grpc_endpoint** endpoint,
   *endpoint = &ee_endpoint->base;
   EventEngine::OnConnectCallback ee_on_connect =
       GrpcClosureToOnConnectCallback(on_connect, endpoint);
-  SliceAllocator sa(ee_endpoint->ru);
+  // TODO(hork): tcp_connect will change to accept a SliceAllocator. This is
+  // temporary.
+  auto sa = absl::make_unique<NoopSliceAllocator>();
   EventEngine::ResolvedAddress ra(reinterpret_cast<const sockaddr*>(addr->addr),
                                   addr->len);
   absl::Time ee_deadline = grpc_core::ToAbslTime(
@@ -124,6 +141,9 @@ grpc_error* tcp_server_create(grpc_closure* shutdown_complete,
   if (rq == nullptr) {
     rq = grpc_resource_quota_create(nullptr);
   }
+  // TODO(hork): tcp_server_create will change to accept a
+  // SliceAllocatorFactory. This is temporary.
+  auto saf = absl::make_unique<NoopSliceAllocatorFactory>();
   EventEngine* event_engine = grpc_iomgr_event_engine();
   absl::StatusOr<std::unique_ptr<EventEngine::Listener>> listener =
       event_engine->CreateListener(
@@ -144,11 +164,11 @@ grpc_error* tcp_server_create(grpc_closure* shutdown_complete,
             grpc_pollset_ee_broadcast_event();
           },
           GrpcClosureToCallback(shutdown_complete, GRPC_ERROR_NONE),
-          endpoint_config, SliceAllocatorFactory(rq));
+          endpoint_config, std::move(saf));
   if (!listener.ok()) {
     return absl_status_to_grpc_error(listener.status());
   }
-  *server = new grpc_tcp_server(std::move(*listener), rq);
+  *server = new grpc_tcp_server(std::move(*listener));
   return GRPC_ERROR_NONE;
 }
 
diff --git a/src/core/lib/iomgr/resource_quota.cc b/src/core/lib/iomgr/resource_quota.cc
index a4f4107d42f..8a6a11b4bf9 100644
--- a/src/core/lib/iomgr/resource_quota.cc
+++ b/src/core/lib/iomgr/resource_quota.cc
@@ -805,6 +805,8 @@ grpc_resource_user* grpc_resource_user_create(
   for (int i = 0; i < GRPC_RULIST_COUNT; i++) {
     resource_user->links[i].next = resource_user->links[i].prev = nullptr;
   }
+  // TODO(hork): the RU should own a copy of the name. See Craig's comments on
+  // the EventEngine gRFC for justification.
   if (name != nullptr) {
     resource_user->name = name;
   } else {
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index dff7fb1b5fb..918111490df 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -105,6 +105,7 @@ CORE_SOURCE_FILES = [
     'src/core/ext/transport/chttp2/transport/bin_decoder.cc',
     'src/core/ext/transport/chttp2/transport/bin_encoder.cc',
     'src/core/ext/transport/chttp2/transport/chttp2_plugin.cc',
+    'src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc',
     'src/core/ext/transport/chttp2/transport/chttp2_transport.cc',
     'src/core/ext/transport/chttp2/transport/context_list.cc',
     'src/core/ext/transport/chttp2/transport/flow_control.cc',
@@ -353,7 +354,6 @@ CORE_SOURCE_FILES = [
     'src/core/lib/debug/trace.cc',
     'src/core/lib/event_engine/endpoint_config.cc',
     'src/core/lib/event_engine/event_engine.cc',
-    'src/core/lib/event_engine/slice_allocator.cc',
     'src/core/lib/event_engine/sockaddr.cc',
     'src/core/lib/gpr/alloc.cc',
     'src/core/lib/gpr/atm.cc',
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index 8d57eb5cbcd..4ac4cc38451 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -1202,6 +1202,8 @@ src/core/ext/transport/chttp2/transport/bin_decoder.h \
 src/core/ext/transport/chttp2/transport/bin_encoder.cc \
 src/core/ext/transport/chttp2/transport/bin_encoder.h \
 src/core/ext/transport/chttp2/transport/chttp2_plugin.cc \
+src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc \
+src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h \
 src/core/ext/transport/chttp2/transport/chttp2_transport.cc \
 src/core/ext/transport/chttp2/transport/chttp2_transport.h \
 src/core/ext/transport/chttp2/transport/context_list.cc \
@@ -1695,7 +1697,6 @@ src/core/lib/debug/trace.h \
 src/core/lib/event_engine/endpoint_config.cc \
 src/core/lib/event_engine/endpoint_config_internal.h \
 src/core/lib/event_engine/event_engine.cc \
-src/core/lib/event_engine/slice_allocator.cc \
 src/core/lib/event_engine/sockaddr.cc \
 src/core/lib/event_engine/sockaddr.h \
 src/core/lib/gpr/alloc.cc \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index b7c2266e1c8..8aa3e4543e2 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -1037,6 +1037,8 @@ src/core/ext/transport/chttp2/transport/bin_decoder.h \
 src/core/ext/transport/chttp2/transport/bin_encoder.cc \
 src/core/ext/transport/chttp2/transport/bin_encoder.h \
 src/core/ext/transport/chttp2/transport/chttp2_plugin.cc \
+src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.cc \
+src/core/ext/transport/chttp2/transport/chttp2_slice_allocator.h \
 src/core/ext/transport/chttp2/transport/chttp2_transport.cc \
 src/core/ext/transport/chttp2/transport/chttp2_transport.h \
 src/core/ext/transport/chttp2/transport/context_list.cc \
@@ -1532,7 +1534,6 @@ src/core/lib/debug/trace.h \
 src/core/lib/event_engine/endpoint_config.cc \
 src/core/lib/event_engine/endpoint_config_internal.h \
 src/core/lib/event_engine/event_engine.cc \
-src/core/lib/event_engine/slice_allocator.cc \
 src/core/lib/event_engine/sockaddr.cc \
 src/core/lib/event_engine/sockaddr.h \
 src/core/lib/gpr/README.md \