diff --git a/CHANGELOG.next.toml b/CHANGELOG.next.toml
index b1d81d97943..7770e39605f 100644
--- a/CHANGELOG.next.toml
+++ b/CHANGELOG.next.toml
@@ -74,3 +74,9 @@ message = "Add support for omitting session token in canonical requests for SigV
 references = ["smithy-rs#2473"]
 meta = { "breaking" = false, "tada" = false, "bug" = false }
 author = "martinjlowm"
+
+[[aws-sdk-rust]]
+message = "Add `into_segments` method to `AggregatedBytes`, for zero-copy conversions."
+references = ["smithy-rs#2525"]
+meta = { "breaking" = false, "tada" = false, "bug" = false }
+author = "parker-timmerman"
diff --git a/codegen-server-test/build.gradle.kts b/codegen-server-test/build.gradle.kts
index 693ed13c826..2dbeebca0a2 100644
--- a/codegen-server-test/build.gradle.kts
+++ b/codegen-server-test/build.gradle.kts
@@ -61,12 +61,7 @@ val allCodegenTests = "../codegen-core/common-test-models".let { commonModels ->
             "constraints",
             imports = listOf("$commonModels/constraints.smithy"),
         ),
-        CodegenTest(
-            "aws.protocoltests.restjson#RestJson",
-            "rest_json",
-            // TODO(https://github.com/awslabs/smithy-rs/issues/1401) `@uniqueItems` is used.
-            extraConfig = """, "codegen": { "ignoreUnsupportedConstraints": true } """,
-        ),
+        CodegenTest("aws.protocoltests.restjson#RestJson", "rest_json"),
         CodegenTest(
             "aws.protocoltests.restjson#RestJsonExtras",
             "rest_json_extras",
@@ -75,26 +70,18 @@ val allCodegenTests = "../codegen-core/common-test-models".let { commonModels ->
         CodegenTest(
             "aws.protocoltests.restjson.validation#RestJsonValidation",
             "rest_json_validation",
+            // `@range` trait is used on floating point shapes, which we deliberately don't want to support.
+            // See https://github.com/awslabs/smithy-rs/issues/1401.
             extraConfig = """, "codegen": { "ignoreUnsupportedConstraints": true } """,
         ),
         CodegenTest("aws.protocoltests.json10#JsonRpc10", "json_rpc10"),
-        CodegenTest(
-            "aws.protocoltests.json#JsonProtocol",
-            "json_rpc11",
-            extraConfig = """, "codegen": { "ignoreUnsupportedConstraints": true } """,
-        ),
+        CodegenTest("aws.protocoltests.json#JsonProtocol", "json_rpc11"),
         CodegenTest(
             "aws.protocoltests.misc#MiscService",
             "misc",
             imports = listOf("$commonModels/misc.smithy"),
-            // TODO(https://github.com/awslabs/smithy-rs/issues/1401) `@uniqueItems` is used.
-            extraConfig = """, "codegen": { "ignoreUnsupportedConstraints": true } """,
-        ),
-        CodegenTest(
-            "com.amazonaws.ebs#Ebs", "ebs",
-            imports = listOf("$commonModels/ebs.json"),
-            extraConfig = """, "codegen": { "ignoreUnsupportedConstraints": true } """,
         ),
+        CodegenTest("com.amazonaws.ebs#Ebs", "ebs", imports = listOf("$commonModels/ebs.json")),
         CodegenTest("com.amazonaws.s3#AmazonS3", "s3"),
         CodegenTest(
             "com.aws.example.rust#PokemonService",
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/ValidateUnsupportedConstraints.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/ValidateUnsupportedConstraints.kt
index 3a6cdabcd08..26f298c1913 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/ValidateUnsupportedConstraints.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/ValidateUnsupportedConstraints.kt
@@ -262,7 +262,7 @@ fun validateUnsupportedConstraints(
         .map { (shape, rangeTrait) -> UnsupportedRangeTraitOnShape(shape, rangeTrait as RangeTrait) }
         .toSet()
 
-    // 5. `@uniqueItems` cannot reach a map shape.
+    // 4. `@uniqueItems` cannot reach a map shape.
     // See https://github.com/awslabs/smithy/issues/1567.
     val mapShapeReachableFromUniqueItemsListShapeSet = walker
         .walkShapes(service)
diff --git a/rust-runtime/aws-smithy-http/src/byte_stream.rs b/rust-runtime/aws-smithy-http/src/byte_stream.rs
index 3b99c0a68d8..fcd697c7b4f 100644
--- a/rust-runtime/aws-smithy-http/src/byte_stream.rs
+++ b/rust-runtime/aws-smithy-http/src/byte_stream.rs
@@ -477,6 +477,11 @@ impl AggregatedBytes {
         self.0.copy_to_bytes(self.0.remaining())
     }
 
+    /// Convert this buffer into an [`Iterator`] of underlying non-contiguous segments of [`Bytes`]
+    pub fn into_segments(self) -> impl Iterator<Item = Bytes> {
+        self.0.into_inner().into_iter()
+    }
+
     /// Convert this buffer into a `Vec<u8>`
     pub fn to_vec(self) -> Vec<u8> {
         self.0
diff --git a/tools/ci-build/Dockerfile b/tools/ci-build/Dockerfile
index b043866a31b..261c942b8b5 100644
--- a/tools/ci-build/Dockerfile
+++ b/tools/ci-build/Dockerfile
@@ -146,6 +146,7 @@ ARG rust_stable_version
 ARG rust_nightly_version
 RUN set -eux; \
     yum -y install \
+        bc \
         ca-certificates \
         gcc \
         git \
diff --git a/tools/ci-scripts/check-only-aws-sdk-services b/tools/ci-scripts/check-only-aws-sdk-services
index 03d000445dd..b15c4133b3d 100755
--- a/tools/ci-scripts/check-only-aws-sdk-services
+++ b/tools/ci-scripts/check-only-aws-sdk-services
@@ -21,10 +21,9 @@ for test_dir in tests/*; do
     fi
 done
 
-# TODO(CrateReorganization): Uncomment when cleaning up `enableNewCrateOrganizationScheme`
-# large_file_count="$(find sdk -iname '*.rs' -type f -size +1M | wc -l | bc)"
-# if [[ "${large_file_count}" != "0" ]]; then
-#     echo "Found ${large_file_count} generated code files larger than 1 MB:"
-#     find sdk -iname '*.rs' -type f -size +1M
-#     exit 1
-# fi
+large_file_count="$(find sdk -iname '*.rs' -type f -size +1M | wc -l | bc)"
+if [[ "${large_file_count}" != "0" ]]; then
+    echo "Found ${large_file_count} generated code files larger than 1 MB:"
+    find sdk -iname '*.rs' -type f -size +1M
+    exit 1
+fi