diff --git a/clients/client-sesv2/package.json b/clients/client-sesv2/package.json
index f1961b590622..7d5cb9ff8063 100644
--- a/clients/client-sesv2/package.json
+++ b/clients/client-sesv2/package.json
@@ -29,6 +29,7 @@
     "@aws-sdk/middleware-recursion-detection": "*",
     "@aws-sdk/middleware-user-agent": "*",
     "@aws-sdk/region-config-resolver": "*",
+    "@aws-sdk/signature-v4-multi-region": "*",
     "@aws-sdk/types": "*",
     "@aws-sdk/util-endpoints": "*",
     "@aws-sdk/util-user-agent-browser": "*",
diff --git a/clients/client-sesv2/src/SESv2Client.ts b/clients/client-sesv2/src/SESv2Client.ts
index e6d7e96f51b3..1d497dff25b7 100644
--- a/clients/client-sesv2/src/SESv2Client.ts
+++ b/clients/client-sesv2/src/SESv2Client.ts
@@ -749,6 +749,7 @@ export class SESv2Client extends __Client<
         identityProviderConfigProvider: async (config: SESv2ClientResolvedConfig) =>
           new DefaultIdentityProviderConfig({
             "aws.auth#sigv4": config.credentials,
+            "aws.auth#sigv4a": config.credentials,
           }),
       })
     );
diff --git a/clients/client-sesv2/src/auth/httpAuthSchemeProvider.ts b/clients/client-sesv2/src/auth/httpAuthSchemeProvider.ts
index b2c1cadcdb7b..39653f09fbaf 100644
--- a/clients/client-sesv2/src/auth/httpAuthSchemeProvider.ts
+++ b/clients/client-sesv2/src/auth/httpAuthSchemeProvider.ts
@@ -1,26 +1,44 @@
 // smithy-typescript generated code
 import {
+  AwsSdkSigV4AAuthInputConfig,
+  AwsSdkSigV4AAuthResolvedConfig,
+  AwsSdkSigV4APreviouslyResolved,
   AwsSdkSigV4AuthInputConfig,
   AwsSdkSigV4AuthResolvedConfig,
   AwsSdkSigV4PreviouslyResolved,
+  resolveAwsSdkSigV4AConfig,
   resolveAwsSdkSigV4Config,
 } from "@aws-sdk/core";
+import { signatureV4CrtContainer } from "@aws-sdk/signature-v4-multi-region";
+import { EndpointParameterInstructions, resolveParams } from "@smithy/middleware-endpoint";
 import {
+  EndpointV2,
   HandlerExecutionContext,
   HttpAuthOption,
   HttpAuthScheme,
+  HttpAuthSchemeId,
   HttpAuthSchemeParameters,
   HttpAuthSchemeParametersProvider,
   HttpAuthSchemeProvider,
+  Logger,
 } from "@smithy/types";
 import { getSmithyContext, normalizeProvider } from "@smithy/util-middleware";
 
+import { EndpointParameters } from "../endpoint/EndpointParameters";
+import { defaultEndpointResolver } from "../endpoint/endpointResolver";
 import { SESv2ClientConfig, SESv2ClientResolvedConfig } from "../SESv2Client";
 
 /**
  * @internal
  */
-export interface SESv2HttpAuthSchemeParameters extends HttpAuthSchemeParameters {
+interface _SESv2HttpAuthSchemeParameters extends HttpAuthSchemeParameters {
+  region?: string;
+}
+
+/**
+ * @internal
+ */
+export interface SESv2HttpAuthSchemeParameters extends _SESv2HttpAuthSchemeParameters, EndpointParameters {
   region?: string;
 }
 
@@ -38,11 +56,71 @@ export interface SESv2HttpAuthSchemeParametersProvider
 /**
  * @internal
  */
-export const defaultSESv2HttpAuthSchemeParametersProvider = async (
+interface EndpointRuleSetSmithyContext {
+  commandInstance?: {
+    constructor?: {
+      getEndpointParameterInstructions(): EndpointParameterInstructions;
+    };
+  };
+}
+/**
+ * @internal
+ */
+interface EndpointRuleSetHttpAuthSchemeParametersProvider<
+  TConfig extends object,
+  TContext extends HandlerExecutionContext,
+  TParameters extends HttpAuthSchemeParameters & EndpointParameters,
+  TInput extends object
+> extends HttpAuthSchemeParametersProvider<TConfig, TContext, TParameters, TInput> {}
+/**
+ * @internal
+ */
+const createEndpointRuleSetHttpAuthSchemeParametersProvider =
+  <
+    TConfig extends object,
+    TContext extends HandlerExecutionContext,
+    THttpAuthSchemeParameters extends HttpAuthSchemeParameters,
+    TEndpointParameters extends EndpointParameters,
+    TParameters extends THttpAuthSchemeParameters & TEndpointParameters,
+    TInput extends object
+  >(
+    defaultHttpAuthSchemeParametersProvider: HttpAuthSchemeParametersProvider<
+      TConfig,
+      TContext,
+      THttpAuthSchemeParameters,
+      TInput
+    >
+  ): EndpointRuleSetHttpAuthSchemeParametersProvider<
+    TConfig,
+    TContext,
+    THttpAuthSchemeParameters & TEndpointParameters,
+    TInput
+  > =>
+  async (config: TConfig, context: TContext, input: TInput): Promise<TParameters> => {
+    if (!input) {
+      throw new Error(`Could not find \`input\` for \`defaultEndpointRuleSetHttpAuthSchemeParametersProvider\``);
+    }
+    const defaultParameters = await defaultHttpAuthSchemeParametersProvider(config, context, input);
+    const instructionsFn = (getSmithyContext(context) as EndpointRuleSetSmithyContext)?.commandInstance?.constructor
+      ?.getEndpointParameterInstructions;
+    if (!instructionsFn) {
+      throw new Error(`getEndpointParameterInstructions() is not defined on \`${context.commandName!}\``);
+    }
+    const endpointParameters = await resolveParams(
+      input as Record<string, unknown>,
+      { getEndpointParameterInstructions: instructionsFn! },
+      config as Record<string, unknown>
+    );
+    return Object.assign(defaultParameters, endpointParameters) as TParameters;
+  };
+/**
+ * @internal
+ */
+const _defaultSESv2HttpAuthSchemeParametersProvider = async (
   config: SESv2ClientResolvedConfig,
   context: HandlerExecutionContext,
   input: object
-): Promise<SESv2HttpAuthSchemeParameters> => {
+): Promise<_SESv2HttpAuthSchemeParameters> => {
   return {
     operation: getSmithyContext(context).operation as string,
     region:
@@ -52,6 +130,11 @@ export const defaultSESv2HttpAuthSchemeParametersProvider = async (
       })(),
   };
 };
+/**
+ * @internal
+ */
+export const defaultSESv2HttpAuthSchemeParametersProvider: SESv2HttpAuthSchemeParametersProvider =
+  createEndpointRuleSetHttpAuthSchemeParametersProvider(_defaultSESv2HttpAuthSchemeParametersProvider);
 
 function createAwsAuthSigv4HttpAuthOption(authParameters: SESv2HttpAuthSchemeParameters): HttpAuthOption {
   return {
@@ -72,6 +155,30 @@ function createAwsAuthSigv4HttpAuthOption(authParameters: SESv2HttpAuthSchemePar
   };
 }
 
+function createAwsAuthSigv4aHttpAuthOption(authParameters: SESv2HttpAuthSchemeParameters): HttpAuthOption {
+  return {
+    schemeId: "aws.auth#sigv4a",
+    signingProperties: {
+      name: "ses",
+      region: authParameters.region,
+    },
+    propertiesExtractor: (config: Partial<SESv2ClientConfig>, context) => ({
+      /**
+       * @internal
+       */
+      signingProperties: {
+        config,
+        context,
+      },
+    }),
+  };
+}
+
+/**
+ * @internal
+ */
+interface _SESv2HttpAuthSchemeProvider extends HttpAuthSchemeProvider<SESv2HttpAuthSchemeParameters> {}
+
 /**
  * @internal
  */
@@ -80,20 +187,102 @@ export interface SESv2HttpAuthSchemeProvider extends HttpAuthSchemeProvider<SESv
 /**
  * @internal
  */
-export const defaultSESv2HttpAuthSchemeProvider: SESv2HttpAuthSchemeProvider = (authParameters) => {
+interface EndpointRuleSetHttpAuthSchemeProvider<
+  EndpointParametersT extends EndpointParameters,
+  HttpAuthSchemeParametersT extends HttpAuthSchemeParameters
+> extends HttpAuthSchemeProvider<EndpointParametersT & HttpAuthSchemeParametersT> {}
+/**
+ * @internal
+ */
+interface DefaultEndpointResolver<EndpointParametersT extends EndpointParameters> {
+  (params: EndpointParametersT, context?: { logger?: Logger }): EndpointV2;
+}
+/**
+ * @internal
+ */
+const createEndpointRuleSetHttpAuthSchemeProvider = <
+  EndpointParametersT extends EndpointParameters,
+  HttpAuthSchemeParametersT extends HttpAuthSchemeParameters
+>(
+  defaultEndpointResolver: DefaultEndpointResolver<EndpointParametersT>,
+  defaultHttpAuthSchemeResolver: HttpAuthSchemeProvider<HttpAuthSchemeParametersT>,
+  createHttpAuthOptionFunctions: Record<
+    HttpAuthSchemeId,
+    (authParameters: EndpointParametersT & HttpAuthSchemeParametersT) => HttpAuthOption
+  >
+): EndpointRuleSetHttpAuthSchemeProvider<EndpointParametersT, HttpAuthSchemeParametersT> => {
+  const endpointRuleSetHttpAuthSchemeProvider: EndpointRuleSetHttpAuthSchemeProvider<
+    EndpointParametersT,
+    HttpAuthSchemeParametersT
+  > = (authParameters) => {
+    const endpoint: EndpointV2 = defaultEndpointResolver(authParameters);
+    const authSchemes = endpoint.properties?.authSchemes;
+    if (!authSchemes) {
+      return defaultHttpAuthSchemeResolver(authParameters);
+    }
+    const options: HttpAuthOption[] = [];
+    for (const scheme of authSchemes) {
+      const { name: resolvedName, properties = {}, ...rest } = scheme;
+      const name = resolvedName.toLowerCase();
+      if (resolvedName !== name) {
+        console.warn(`HttpAuthScheme has been normalized with lowercasing: \`${resolvedName}\` to \`${name}\``);
+      }
+      let schemeId;
+      if (name === "sigv4a") {
+        schemeId = "aws.auth#sigv4a";
+        const sigv4Present = authSchemes.find((s) => {
+          const name = s.name.toLowerCase();
+          return name !== "sigv4a" && name.startsWith("sigv4");
+        });
+        if (!signatureV4CrtContainer.CrtSignerV4 && sigv4Present) {
+          // sigv4a -> sigv4 fallback.
+          continue;
+        }
+      } else if (name.startsWith("sigv4")) {
+        schemeId = "aws.auth#sigv4";
+      } else {
+        throw new Error(`Unknown HttpAuthScheme found in \`@smithy.rules#endpointRuleSet\`: \`${name}\``);
+      }
+      const createOption = createHttpAuthOptionFunctions[schemeId];
+      if (!createOption) {
+        throw new Error(`Could not find HttpAuthOption create function for \`${schemeId}\``);
+      }
+      const option = createOption(authParameters);
+      option.schemeId = schemeId;
+      option.signingProperties = { ...(option.signingProperties || {}), ...rest, ...properties };
+      options.push(option);
+    }
+    return options;
+  };
+
+  return endpointRuleSetHttpAuthSchemeProvider;
+};
+/**
+ * @internal
+ */
+const _defaultSESv2HttpAuthSchemeProvider: _SESv2HttpAuthSchemeProvider = (authParameters) => {
   const options: HttpAuthOption[] = [];
   switch (authParameters.operation) {
     default: {
       options.push(createAwsAuthSigv4HttpAuthOption(authParameters));
+      options.push(createAwsAuthSigv4aHttpAuthOption(authParameters));
     }
   }
   return options;
 };
+/**
+ * @internal
+ */
+export const defaultSESv2HttpAuthSchemeProvider: SESv2HttpAuthSchemeProvider =
+  createEndpointRuleSetHttpAuthSchemeProvider(defaultEndpointResolver, _defaultSESv2HttpAuthSchemeProvider, {
+    "aws.auth#sigv4": createAwsAuthSigv4HttpAuthOption,
+    "aws.auth#sigv4a": createAwsAuthSigv4aHttpAuthOption,
+  });
 
 /**
  * @internal
  */
-export interface HttpAuthSchemeInputConfig extends AwsSdkSigV4AuthInputConfig {
+export interface HttpAuthSchemeInputConfig extends AwsSdkSigV4AuthInputConfig, AwsSdkSigV4AAuthInputConfig {
   /**
    * Configuration of HttpAuthSchemes for a client which provides default identity providers and signers per auth scheme.
    * @internal
@@ -110,7 +299,7 @@ export interface HttpAuthSchemeInputConfig extends AwsSdkSigV4AuthInputConfig {
 /**
  * @internal
  */
-export interface HttpAuthSchemeResolvedConfig extends AwsSdkSigV4AuthResolvedConfig {
+export interface HttpAuthSchemeResolvedConfig extends AwsSdkSigV4AuthResolvedConfig, AwsSdkSigV4AAuthResolvedConfig {
   /**
    * Configuration of HttpAuthSchemes for a client which provides default identity providers and signers per auth scheme.
    * @internal
@@ -128,10 +317,11 @@ export interface HttpAuthSchemeResolvedConfig extends AwsSdkSigV4AuthResolvedCon
  * @internal
  */
 export const resolveHttpAuthSchemeConfig = <T>(
-  config: T & HttpAuthSchemeInputConfig & AwsSdkSigV4PreviouslyResolved
+  config: T & HttpAuthSchemeInputConfig & AwsSdkSigV4PreviouslyResolved & AwsSdkSigV4APreviouslyResolved
 ): T & HttpAuthSchemeResolvedConfig => {
   const config_0 = resolveAwsSdkSigV4Config(config);
+  const config_1 = resolveAwsSdkSigV4AConfig(config_0);
   return {
-    ...config_0,
+    ...config_1,
   } as T & HttpAuthSchemeResolvedConfig;
 };
diff --git a/clients/client-sesv2/src/runtimeConfig.shared.ts b/clients/client-sesv2/src/runtimeConfig.shared.ts
index e7687653e4a0..1c984da9ecd1 100644
--- a/clients/client-sesv2/src/runtimeConfig.shared.ts
+++ b/clients/client-sesv2/src/runtimeConfig.shared.ts
@@ -1,5 +1,6 @@
 // smithy-typescript generated code
-import { AwsSdkSigV4Signer } from "@aws-sdk/core";
+import { AwsSdkSigV4ASigner, AwsSdkSigV4Signer } from "@aws-sdk/core";
+import { SignatureV4MultiRegion } from "@aws-sdk/signature-v4-multi-region";
 import { NoOpLogger } from "@smithy/smithy-client";
 import { IdentityProviderConfig } from "@smithy/types";
 import { parseUrl } from "@smithy/url-parser";
@@ -28,9 +29,15 @@ export const getRuntimeConfig = (config: SESv2ClientConfig) => {
         identityProvider: (ipc: IdentityProviderConfig) => ipc.getIdentityProvider("aws.auth#sigv4"),
         signer: new AwsSdkSigV4Signer(),
       },
+      {
+        schemeId: "aws.auth#sigv4a",
+        identityProvider: (ipc: IdentityProviderConfig) => ipc.getIdentityProvider("aws.auth#sigv4a"),
+        signer: new AwsSdkSigV4ASigner(),
+      },
     ],
     logger: config?.logger ?? new NoOpLogger(),
     serviceId: config?.serviceId ?? "SESv2",
+    signerConstructor: config?.signerConstructor ?? SignatureV4MultiRegion,
     urlParser: config?.urlParser ?? parseUrl,
     utf8Decoder: config?.utf8Decoder ?? fromUtf8,
     utf8Encoder: config?.utf8Encoder ?? toUtf8,
diff --git a/clients/client-sesv2/src/runtimeConfig.ts b/clients/client-sesv2/src/runtimeConfig.ts
index ce93eef27297..196d53267f54 100644
--- a/clients/client-sesv2/src/runtimeConfig.ts
+++ b/clients/client-sesv2/src/runtimeConfig.ts
@@ -2,7 +2,7 @@
 // @ts-ignore: package.json will be imported from dist folders
 import packageInfo from "../package.json"; // eslint-disable-line
 
-import { emitWarningIfUnsupportedVersion as awsCheckVersion } from "@aws-sdk/core";
+import { NODE_SIGV4A_CONFIG_OPTIONS, emitWarningIfUnsupportedVersion as awsCheckVersion } from "@aws-sdk/core";
 import { defaultProvider as credentialDefaultProvider } from "@aws-sdk/credential-provider-node";
 import { NODE_APP_ID_CONFIG_OPTIONS, createDefaultUserAgentProvider } from "@aws-sdk/util-user-agent-node";
 import {
@@ -52,6 +52,7 @@ export const getRuntimeConfig = (config: SESv2ClientConfig) => {
         default: async () => (await defaultConfigProvider()).retryMode || DEFAULT_RETRY_MODE,
       }),
     sha256: config?.sha256 ?? Hash.bind(null, "sha256"),
+    sigv4aSigningRegionSet: config?.sigv4aSigningRegionSet ?? loadNodeConfig(NODE_SIGV4A_CONFIG_OPTIONS),
     streamCollector: config?.streamCollector ?? streamCollector,
     useDualstackEndpoint: config?.useDualstackEndpoint ?? loadNodeConfig(NODE_USE_DUALSTACK_ENDPOINT_CONFIG_OPTIONS),
     useFipsEndpoint: config?.useFipsEndpoint ?? loadNodeConfig(NODE_USE_FIPS_ENDPOINT_CONFIG_OPTIONS),
diff --git a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsTraitsUtils.java b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsTraitsUtils.java
index f55183ac300a..84b5108f2b33 100644
--- a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsTraitsUtils.java
+++ b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsTraitsUtils.java
@@ -38,7 +38,8 @@ public final class AwsTraitsUtils {
     private static final Set<ShapeId> ENDPOINT_RULESET_HTTP_AUTH_SCHEME_SERVICES = Set.of(
         ShapeId.from("com.amazonaws.s3#AmazonS3"),
         ShapeId.from("com.amazonaws.eventbridge#AWSEvents"),
-        ShapeId.from("com.amazonaws.cloudfrontkeyvaluestore#CloudFrontKeyValueStore")
+        ShapeId.from("com.amazonaws.cloudfrontkeyvaluestore#CloudFrontKeyValueStore"),
+        ShapeId.from("com.amazonaws.sesv2#SimpleEmailService_v2")
     );
 
     private AwsTraitsUtils() {}
diff --git a/yarn.lock b/yarn.lock
index 923dc14bab1a..12ccfa4bbda5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -20360,6 +20360,7 @@ __metadata:
     "@aws-sdk/middleware-recursion-detection": "npm:*"
     "@aws-sdk/middleware-user-agent": "npm:*"
     "@aws-sdk/region-config-resolver": "npm:*"
+    "@aws-sdk/signature-v4-multi-region": "npm:*"
     "@aws-sdk/types": "npm:*"
     "@aws-sdk/util-endpoints": "npm:*"
     "@aws-sdk/util-user-agent-browser": "npm:*"