diff --git a/rust_dev_preview/cross_service/photo_asset_management/Cargo.toml b/rust_dev_preview/cross_service/photo_asset_management/Cargo.toml
index 63b49c2b350..7c7696f24be 100644
--- a/rust_dev_preview/cross_service/photo_asset_management/Cargo.toml
+++ b/rust_dev_preview/cross_service/photo_asset_management/Cargo.toml
@@ -19,10 +19,9 @@ aws-sdk-dynamodb = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "
 aws-sdk-rekognition = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-sdk-s3 = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-sdk-sns = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
-aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [
-  "test-util",
-] }
+aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-smithy-http = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
+aws-smithy-runtime = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-smithy-types-convert ={ git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = ["convert-chrono"] }
 aws_lambda_events = { version = "0.10.0", features = ["s3", "apigw"], default-features = false }
 bytes = "1.4.0"
@@ -35,6 +34,7 @@ lambda_runtime = "0.8.0"
 miniz_oxide = "0.7.1"
 pin-project = "1.0.12"
 pipe = "0.4.0"
+sdk-examples-test-utils = { path = "../../test-utils" }
 serde = { version = "1.0.159", features = ["derive"] }
 serde_json = "1.0.95"
 streaming-zip = "0.5.0"
diff --git a/rust_dev_preview/cross_service/photo_asset_management/src/handlers/labels.rs b/rust_dev_preview/cross_service/photo_asset_management/src/handlers/labels.rs
index f2b137476db..da2fc45fd13 100644
--- a/rust_dev_preview/cross_service/photo_asset_management/src/handlers/labels.rs
+++ b/rust_dev_preview/cross_service/photo_asset_management/src/handlers/labels.rs
@@ -104,10 +104,9 @@ pub async fn handler(
 
 #[cfg(test)]
 mod test {
+    use sdk_examples_test_utils::single_shot_client;
     use serde_json::json;
 
-    use crate::single_shot_client;
-
     use super::{get_labels, Labels};
 
     #[tokio::test]
diff --git a/rust_dev_preview/cross_service/photo_asset_management/src/lib.rs b/rust_dev_preview/cross_service/photo_asset_management/src/lib.rs
index f634c83d9a6..3d0aca88324 100644
--- a/rust_dev_preview/cross_service/photo_asset_management/src/lib.rs
+++ b/rust_dev_preview/cross_service/photo_asset_management/src/lib.rs
@@ -1,5 +1,4 @@
 pub mod chunked_uploader;
 pub mod common;
 pub mod handlers;
-pub mod test_utils;
 pub mod uploader;
diff --git a/rust_dev_preview/cross_service/photo_asset_management/src/test_utils/macros.rs b/rust_dev_preview/cross_service/photo_asset_management/src/test_utils/macros.rs
deleted file mode 100644
index fbf286c6061..00000000000
--- a/rust_dev_preview/cross_service/photo_asset_management/src/test_utils/macros.rs
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0.
- */
-
-//! Macros and functions that simplify making AWS SDK clients with a mocked request/response pair.
-
-/// Generate a single http::{Request, Response} pair. The first argument
-/// is the expression to use as the value for SdkBody::from. The second
-/// argument with the HTTP Status code and the response body.
-///
-/// To create a number of events to use for a test client, create a vec![]
-/// of many of these test_event pairs.
-#[macro_export]
-macro_rules! test_event {
-    (
-        $req:expr,
-        (
-            $status:expr,
-            $res:expr
-        )
-    ) => {{
-        (
-            http::Request::builder()
-                .body(aws_smithy_http::body::SdkBody::from($req))
-                .unwrap(),
-            http::Response::builder()
-                .status($status)
-                .body(aws_smithy_http::body::SdkBody::from($res))
-                .unwrap(),
-        )
-    }};
-    (
-        $req:expr,
-        (
-            $status:expr,
-            $headers:expr,
-            $res:expr
-        )
-    ) => {{
-        (
-            http::Request::builder()
-                .body(aws_smithy_http::body::SdkBody::from($req))
-                .unwrap(),
-            {
-                let mut builder = http::Response::builder().status($status);
-                for (k, v) in $headers {
-                    builder = builder.header(k, v);
-                }
-                builder
-                    .body(aws_smithy_http::body::SdkBody::from($res))
-                    .unwrap()
-            },
-        )
-    }};
-}
-
-/// Create a hard-coded testing config for an AWS SDK.
-#[macro_export]
-macro_rules! client_config {
-    (
-        $sdk_crate:ident
-    ) => {
-        $sdk_crate::Config::builder()
-            // TODO: replace after https://github.com/awslabs/smithy-rs/pull/2145
-            // .credentials_provider($sdk_crate::config::Credentials::for_test())
-            .credentials_provider($sdk_crate::config::Credentials::new(
-                "ATESTCLIENT",
-                "atestsecretkey",
-                Some("atestsessiontoken".to_string()),
-                None,
-                "",
-            ))
-            .region($sdk_crate::config::Region::new("us-east-1"))
-    };
-}
-
-/// Create a single-shot Client for `sdk_crate`. The `req` and `res` will be the
-/// body of the request and the response, respectively. The `status` is the HTTP
-/// status code for the response. The credentials are hardcoded test values.
-#[macro_export]
-macro_rules! single_shot_client {
-    (sdk: $sdk_crate:ident, status: $status:expr, response: $res:expr) => {{
-        single_shot_client!($sdk_crate, "", $status, vec![], $res)
-    }};
-    (sdk: $sdk_crate:ident, request: $req:expr, status: $status:expr, response: $res:expr) => {{
-        single_shot_client!($sdk_crate, $res, $status, vec![], $res)
-    }};
-    (sdk: $sdk_crate:ident, status: $status:expr, headers: $res_headers:expr, response: $res:expr) => {{
-        single_shot_client!($sdk_crate, "", $status, $res_headers, $res)
-    }};
-    // "Private" internal root macro.
-    ($sdk_crate:ident, $req:expr, $status:expr, $res_headers:expr, $res:expr) => {{
-        $sdk_crate::Client::from_conf(
-            $crate::client_config!($sdk_crate)
-                .http_connector($crate::test_utils::single_shot(
-                    $req.into(),
-                    ($status.try_into().unwrap(), $res_headers, $res.into()),
-                ))
-                .build(),
-        )
-    }};
-}
diff --git a/rust_dev_preview/cross_service/photo_asset_management/src/test_utils/mod.rs b/rust_dev_preview/cross_service/photo_asset_management/src/test_utils/mod.rs
deleted file mode 100644
index f3780b6d6bd..00000000000
--- a/rust_dev_preview/cross_service/photo_asset_management/src/test_utils/mod.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-use aws_smithy_http::body::SdkBody;
-
-use crate::test_event;
-
-pub mod macros;
-
-/// Create a single-shot test connection. The arguments are the same as test_event,
-/// but the expanded macro creates a TestConnection. The `TestConnection` can be
-/// provided directly to a `Client::from_conf_conn`.
-pub fn single_shot(
-    req: SdkBody,
-    res: (http::StatusCode, Vec<(&str, &str)>, SdkBody),
-) -> aws_smithy_client::test_connection::TestConnection<SdkBody> {
-    aws_smithy_client::test_connection::TestConnection::new(vec![
-        (test_event!(req, (res.0, res.1, res.2))),
-    ])
-}
diff --git a/rust_dev_preview/cross_service/rest_ses/Cargo.toml b/rust_dev_preview/cross_service/rest_ses/Cargo.toml
index 9d6da1fe581..d429638a7cd 100644
--- a/rust_dev_preview/cross_service/rest_ses/Cargo.toml
+++ b/rust_dev_preview/cross_service/rest_ses/Cargo.toml
@@ -18,6 +18,7 @@ aws-config = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next"
 aws-sdk-cloudwatchlogs = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-sdk-rdsdata = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-sdk-ses = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
+aws-smithy-runtime = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 chrono = { version = "0.4.22", default-features = false, features = [
     "clock",
     "serde",
diff --git a/rust_dev_preview/cross_service/rest_ses/src/client.rs b/rust_dev_preview/cross_service/rest_ses/src/client.rs
index 8cf39561312..c9b119f82c7 100644
--- a/rust_dev_preview/cross_service/rest_ses/src/client.rs
+++ b/rust_dev_preview/cross_service/rest_ses/src/client.rs
@@ -64,23 +64,20 @@ impl RdsClient {
 
 #[cfg(test)]
 mod rds_client_for_test {
-    use aws_smithy_http::body::SdkBody;
+    use aws_smithy_runtime::client::http::test_util::ReplayEvent;
     use secrecy::Secret;
 
     use super::RdsClient;
     impl RdsClient {
-        pub fn for_test(
-            pairs: Vec<(
-                http::request::Request<SdkBody>,
-                http::response::Response<SdkBody>,
-            )>,
-        ) -> Self {
+        pub fn for_test(pairs: Vec<ReplayEvent>) -> Self {
             RdsClient {
                 client: aws_sdk_rdsdata::Client::from_conf(
                     sdk_examples_test_utils::client_config!(aws_sdk_rdsdata)
-                        .http_connector(aws_smithy_client::test_connection::TestConnection::new(
-                            pairs,
-                        ))
+                        .http_client(
+                            aws_smithy_runtime::client::http::test_util::StaticReplayClient::new(
+                                pairs,
+                            ),
+                        )
                         .build(),
                 ),
                 secret_arn: Secret::from("secret".to_string()),
diff --git a/rust_dev_preview/examples/dynamodb/Cargo.toml b/rust_dev_preview/examples/dynamodb/Cargo.toml
index 94ce4ec7a45..94085e4ee72 100644
--- a/rust_dev_preview/examples/dynamodb/Cargo.toml
+++ b/rust_dev_preview/examples/dynamodb/Cargo.toml
@@ -12,30 +12,25 @@ edition = "2021"
 
 [dependencies]
 aws-config = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
-aws-sdk-dynamodb = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-http = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
-aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [
-  "client-hyper",
-  "rustls",
-  "rt-tokio",
-] }
-aws-smithy-http = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [
-  "rt-tokio",
-] }
+aws-sdk-dynamodb = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
+aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [ "client-hyper", "rustls", "rt-tokio", ] }
+aws-smithy-http = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [ "rt-tokio", ] }
+aws-smithy-runtime = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = ["test-util"] }
 aws-smithy-types = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 axum = "0.5.16"
-http = "0.2.5"
+clap = { version = "~4.2", features = ["derive"] }
 futures = "0.3"
+http = "0.2.5"
 log = "0.4.17"
 rand = "0.8.3"
 sdk-examples-test-utils = { path = "../../test-utils" }
 serde = {version = "1.0", features = ["derive"]}
-serde_json = "1"
 serde_dynamo = { version = "4", features = ["aws-sdk-dynamodb+0_22"] }
-clap = { version = "~4.2", features = ["derive"] }
-tracing = "0.1"
+serde_json = "1"
 thiserror = "1.0"
 tokio = { version = "1.20.1", features = ["full"] }
 tokio-stream = "0.1.8"
 tower-http = { version = "0.3.0", features = ["cors"] }
-tracing-subscriber = { version = "0.3.15", features = ["env-filter"] }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3.15", features = ["env-filter"] }
\ No newline at end of file
diff --git a/rust_dev_preview/examples/dynamodb/src/scenario/list.rs b/rust_dev_preview/examples/dynamodb/src/scenario/list.rs
index 6809d082fee..599f6cb32ce 100644
--- a/rust_dev_preview/examples/dynamodb/src/scenario/list.rs
+++ b/rust_dev_preview/examples/dynamodb/src/scenario/list.rs
@@ -119,8 +119,8 @@ mod test_list_more_tables {
     async fn test_list_tables_iterative() {
         let client = aws_sdk_dynamodb::Client::from_conf(
             sdk_examples_test_utils::client_config!(aws_sdk_dynamodb)
-                .http_connector(aws_smithy_client::test_connection::TestConnection::new(
-                    vec![
+                .http_client(
+                    aws_smithy_runtime::client::http::test_util::StaticReplayClient::new(vec![
                         test_event!(
                             "",
                             (
@@ -136,8 +136,8 @@ mod test_list_more_tables {
                             )
                         ),
                         test_event!("", (200, r#"{"TableNames":["g","h"]}"#)),
-                    ],
-                ))
+                    ]),
+                )
                 .build(),
         );
 
diff --git a/rust_dev_preview/examples/s3/Cargo.toml b/rust_dev_preview/examples/s3/Cargo.toml
index c15aab14f48..92d8b2ab198 100644
--- a/rust_dev_preview/examples/s3/Cargo.toml
+++ b/rust_dev_preview/examples/s3/Cargo.toml
@@ -30,6 +30,7 @@ aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch =
   "test-util",
 ] }
 aws-smithy-http = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = ["rt-tokio"] }
+aws-smithy-runtime = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 aws-smithy-types = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
 sdk-examples-test-utils = { path = "../../test-utils" }
 bytes = "1.4.0"
diff --git a/rust_dev_preview/examples/s3/src/s3-service-lib.rs b/rust_dev_preview/examples/s3/src/s3-service-lib.rs
index d4039118e42..15a73906a99 100644
--- a/rust_dev_preview/examples/s3/src/s3-service-lib.rs
+++ b/rust_dev_preview/examples/s3/src/s3-service-lib.rs
@@ -163,7 +163,7 @@ pub async fn create_bucket(
 mod test {
     use std::env::temp_dir;
 
-    use aws_smithy_client::test_connection::TestConnection;
+    use aws_smithy_runtime::client::http::test_util::StaticReplayClient;
     use sdk_examples_test_utils::{client_config, single_shot_client, test_event};
     use tokio::{fs::File, io::AsyncWriteExt};
     use uuid::Uuid;
@@ -190,7 +190,7 @@ mod test {
     async fn test_delete_objects() {
         let client = aws_sdk_s3::Client::from_conf(
             client_config!(aws_sdk_s3)
-                .http_connector(TestConnection::new(vec![
+                .http_client(StaticReplayClient::new(vec![
                     // client.list_objects_v2().bucket(bucket_name)
                     test_event!(
                         r#""#,
@@ -241,7 +241,7 @@ mod test {
     async fn test_delete_objects_failed() {
         let client = aws_sdk_s3::Client::from_conf(
             client_config!(aws_sdk_s3)
-                .http_connector(TestConnection::new(vec![
+                .http_client(StaticReplayClient::new(vec![
                     // client.list_objects_v2().bucket(bucket_name)
                     test_event!(
                         r#""#,
diff --git a/rust_dev_preview/run_all.sh b/rust_dev_preview/run_all.sh
new file mode 100755
index 00000000000..413b3ad080a
--- /dev/null
+++ b/rust_dev_preview/run_all.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+DIRS=(
+  cross_service
+  examples
+  lambda
+  webassembly
+)
+
+export RUSTFLAGS="-D warnings" ;
+export APP_ENVIRONMENT="test"
+
+FAIL=()
+for f in ${DIRS[@]} ; do
+  "$HOME/.cargo/bin/cargo" fmt --manifest-path rust_dev_preview/$f/Cargo.toml --all --check || FAIL+=("fmt $f")
+  "$HOME/.cargo/bin/cargo" clippy --manifest-path rust_dev_preview/$f/Cargo.toml --all || FAIL+=("clippy $f")
+  "$HOME/.cargo/bin/cargo" test --manifest-path rust_dev_preview/$f/Cargo.toml --all || FAIL+=("clippy $f")
+done
+
+echo $FAIL
+
+exit "${#FAIL[@]}"
diff --git a/rust_dev_preview/test-utils/Cargo.toml b/rust_dev_preview/test-utils/Cargo.toml
index 25b0e0ddfe8..815d5cec597 100644
--- a/rust_dev_preview/test-utils/Cargo.toml
+++ b/rust_dev_preview/test-utils/Cargo.toml
@@ -10,10 +10,9 @@ edition = "2021"
 
 [dependencies]
 aws-config = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
-aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [
-  "test-util",
-] }
+aws-smithy-client = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = [ "test-util", ] }
 aws-smithy-http = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next" }
+aws-smithy-runtime = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next", features = ["test-util"] }
 aws-types = { git = "https://github.com/awslabs/aws-sdk-rust", branch = "next"}
 http = "0.2"
 
diff --git a/rust_dev_preview/test-utils/src/macros.rs b/rust_dev_preview/test-utils/src/macros.rs
index 52f437496e3..e5532383a99 100644
--- a/rust_dev_preview/test-utils/src/macros.rs
+++ b/rust_dev_preview/test-utils/src/macros.rs
@@ -20,7 +20,7 @@ macro_rules! test_event {
             $res:expr
         )
     ) => {{
-        (
+        aws_smithy_runtime::client::http::test_util::ReplayEvent::new(
             http::Request::builder()
                 .body(aws_smithy_http::body::SdkBody::from($req))
                 .unwrap(),
@@ -38,7 +38,7 @@ macro_rules! test_event {
             $res:expr
         )
     ) => {{
-        (
+        aws_smithy_runtime::client::http::test_util::ReplayEvent::new(
             http::Request::builder()
                 .body(aws_smithy_http::body::SdkBody::from($req))
                 .unwrap(),
@@ -73,7 +73,7 @@ macro_rules! single_shot_client {
     ($sdk_crate:ident, $req:expr, $status:expr, $res_headers:expr, $res:expr) => {{
         $sdk_crate::Client::from_conf(
             sdk_examples_test_utils::client_config!($sdk_crate)
-                .http_connector(sdk_examples_test_utils::single_shot(
+                .http_client(sdk_examples_test_utils::single_shot(
                     $req.into(),
                     ($status.try_into().unwrap(), $res_headers, $res.into()),
                 ))
diff --git a/rust_dev_preview/test-utils/src/mod.rs b/rust_dev_preview/test-utils/src/mod.rs
index 40a301bdaa2..a8a97c6733e 100644
--- a/rust_dev_preview/test-utils/src/mod.rs
+++ b/rust_dev_preview/test-utils/src/mod.rs
@@ -8,8 +8,8 @@ pub mod macros;
 pub fn single_shot(
     req: SdkBody,
     res: (http::StatusCode, Vec<(&str, &str)>, SdkBody),
-) -> aws_smithy_client::test_connection::TestConnection<SdkBody> {
-    aws_smithy_client::test_connection::TestConnection::new(vec![
+) -> aws_smithy_runtime::client::http::test_util::StaticReplayClient {
+    aws_smithy_runtime::client::http::test_util::StaticReplayClient::new(vec![
         (test_event!(req, (res.0, res.1, res.2))),
     ])
 }