diff --git a/packages/aws-cdk-lib/aws-ecs/lib/base/task-definition.ts b/packages/aws-cdk-lib/aws-ecs/lib/base/task-definition.ts
index be15cf6c195c5..c079f1aae02a3 100644
--- a/packages/aws-cdk-lib/aws-ecs/lib/base/task-definition.ts
+++ b/packages/aws-cdk-lib/aws-ecs/lib/base/task-definition.ts
@@ -374,6 +374,15 @@ export class TaskDefinition extends TaskDefinitionBase {
    */
   public readonly ephemeralStorageGiB?: number;
 
+  /**
+   * The process namespace to use for the containers in the task.
+   *
+   * Only supported for tasks that are hosted on AWS Fargate if the tasks
+   * are using platform version 1.4.0 or later (Linux).
+   * Not supported in Windows containers.
+   */
+  public readonly pidMode?: PidMode;
+
   /**
    * The container definitions.
    */
@@ -455,6 +464,7 @@ export class TaskDefinition extends TaskDefinitionBase {
     }
 
     this.ephemeralStorageGiB = props.ephemeralStorageGiB;
+    this.pidMode = props.pidMode;
 
     // validate the cpu and memory size for the Windows operation system family.
     if (props.runtimePlatform?.operatingSystemFamily?.isWindows()) {
@@ -487,7 +497,7 @@ export class TaskDefinition extends TaskDefinitionBase {
       cpu: props.cpu,
       memory: props.memoryMiB,
       ipcMode: props.ipcMode,
-      pidMode: props.pidMode,
+      pidMode: this.pidMode,
       inferenceAccelerators: Lazy.any({
         produce: () =>
           !isFargateCompatible(this.compatibility) ? this.renderInferenceAccelerators() : undefined,
diff --git a/packages/aws-cdk-lib/aws-ecs/lib/fargate/fargate-service.ts b/packages/aws-cdk-lib/aws-ecs/lib/fargate/fargate-service.ts
index fa4194fa4f1aa..b4d1324e18947 100644
--- a/packages/aws-cdk-lib/aws-ecs/lib/fargate/fargate-service.ts
+++ b/packages/aws-cdk-lib/aws-ecs/lib/fargate/fargate-service.ts
@@ -128,6 +128,23 @@ export class FargateService extends BaseService implements IFargateService {
       throw new Error('Only one of SecurityGroup or SecurityGroups can be populated.');
     }
 
+    // Platform versions not supporting referencesSecretJsonField, ephemeralStorageGiB, or pidMode on a task definition
+    const unsupportedPlatformVersions = [
+      FargatePlatformVersion.VERSION1_0,
+      FargatePlatformVersion.VERSION1_1,
+      FargatePlatformVersion.VERSION1_2,
+      FargatePlatformVersion.VERSION1_3,
+    ];
+    const isUnsupportedPlatformVersion = props.platformVersion && unsupportedPlatformVersions.includes(props.platformVersion);
+
+    if (props.taskDefinition.ephemeralStorageGiB && isUnsupportedPlatformVersion) {
+      throw new Error(`The ephemeralStorageGiB feature requires platform version ${FargatePlatformVersion.VERSION1_4} or later, got ${props.platformVersion}.`);
+    }
+
+    if (props.taskDefinition.pidMode && isUnsupportedPlatformVersion) {
+      throw new Error(`The pidMode feature requires platform version ${FargatePlatformVersion.VERSION1_4} or later, got ${props.platformVersion}.`);
+    }
+
     super(scope, id, {
       ...props,
       desiredCount: props.desiredCount,
@@ -153,9 +170,7 @@ export class FargateService extends BaseService implements IFargateService {
     }
 
     this.node.addValidation({
-      validate: () => this.taskDefinition.referencesSecretJsonField
-      && props.platformVersion
-      && SECRET_JSON_FIELD_UNSUPPORTED_PLATFORM_VERSIONS.includes(props.platformVersion)
+      validate: () => this.taskDefinition.referencesSecretJsonField && isUnsupportedPlatformVersion
         ? [`The task definition of this service uses at least one container that references a secret JSON field. This feature requires platform version ${FargatePlatformVersion.VERSION1_4} or later.`]
         : [],
     });
@@ -214,10 +229,3 @@ export enum FargatePlatformVersion {
    */
   VERSION1_0 = '1.0.0',
 }
-
-const SECRET_JSON_FIELD_UNSUPPORTED_PLATFORM_VERSIONS = [
-  FargatePlatformVersion.VERSION1_0,
-  FargatePlatformVersion.VERSION1_1,
-  FargatePlatformVersion.VERSION1_2,
-  FargatePlatformVersion.VERSION1_3,
-];
diff --git a/packages/aws-cdk-lib/aws-ecs/test/fargate/fargate-service.test.ts b/packages/aws-cdk-lib/aws-ecs/test/fargate/fargate-service.test.ts
index 3ef83abd316b3..0ecd027501019 100644
--- a/packages/aws-cdk-lib/aws-ecs/test/fargate/fargate-service.test.ts
+++ b/packages/aws-cdk-lib/aws-ecs/test/fargate/fargate-service.test.ts
@@ -1,6 +1,7 @@
 import { testDeprecated } from '@aws-cdk/cdk-build-tools';
 import { Annotations, Match, Template } from '../../../assertions';
 import * as appscaling from '../../../aws-applicationautoscaling';
+import * as batch from '../../../aws-batch';
 import * as cloudwatch from '../../../aws-cloudwatch';
 import * as ec2 from '../../../aws-ec2';
 import * as elbv2 from '../../../aws-elasticloadbalancingv2';
@@ -685,6 +686,92 @@ describe('fargate service', () => {
       }).toThrow(/one essential container/);
     });
 
+    test('errors when platform version does not support containers which references secret JSON field', () => {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const vpc = new ec2.Vpc(stack, 'MyVpc', {});
+      const cluster = new ecs.Cluster(stack, 'EcsCluster', { vpc });
+      const taskDefinition = new ecs.FargateTaskDefinition(stack, 'FargateTaskDef', {
+        runtimePlatform: {
+          operatingSystemFamily: ecs.OperatingSystemFamily.LINUX,
+          cpuArchitecture: ecs.CpuArchitecture.ARM64,
+        },
+        memoryLimitMiB: 512,
+        cpu: 256,
+      });
+
+      // Errors on validation, not on construction.
+      new ecs.FargateService(stack, 'FargateService', {
+        cluster,
+        taskDefinition,
+        platformVersion: ecs.FargatePlatformVersion.VERSION1_2,
+      });
+
+      taskDefinition.addContainer('main', {
+        image: ecs.ContainerImage.fromRegistry('somecontainer'),
+        secrets: {
+          envName: batch.Secret.fromSecretsManager(new secretsmanager.Secret(stack, 'testSecret'), 'secretField'),
+        },
+      });
+
+      // THEN
+      expect(() => {
+        Template.fromStack(stack);
+      }).toThrow(/This feature requires platform version/);
+    });
+
+    test('errors when platform version does not support ephemeralStorageGiB', () => {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const vpc = new ec2.Vpc(stack, 'MyVpc', {});
+      const cluster = new ecs.Cluster(stack, 'EcsCluster', { vpc });
+      const taskDefinition = new ecs.FargateTaskDefinition(stack, 'FargateTaskDef', {
+        runtimePlatform: {
+          operatingSystemFamily: ecs.OperatingSystemFamily.LINUX,
+          cpuArchitecture: ecs.CpuArchitecture.ARM64,
+        },
+        memoryLimitMiB: 512,
+        cpu: 256,
+        ephemeralStorageGiB: 100,
+      });
+
+      // WHEN
+      // THEN
+      expect(() => {
+        new ecs.FargateService(stack, 'FargateService', {
+          cluster,
+          taskDefinition,
+          platformVersion: ecs.FargatePlatformVersion.VERSION1_2,
+        });
+      }).toThrow(/The ephemeralStorageGiB feature requires platform version/);
+    });
+
+    test('errors when platform version does not support pidMode', () => {
+      // GIVEN
+      const stack = new cdk.Stack();
+      const vpc = new ec2.Vpc(stack, 'MyVpc', {});
+      const cluster = new ecs.Cluster(stack, 'EcsCluster', { vpc });
+      const taskDefinition = new ecs.FargateTaskDefinition(stack, 'FargateTaskDef', {
+        runtimePlatform: {
+          operatingSystemFamily: ecs.OperatingSystemFamily.LINUX,
+          cpuArchitecture: ecs.CpuArchitecture.ARM64,
+        },
+        memoryLimitMiB: 512,
+        cpu: 256,
+        pidMode: ecs.PidMode.HOST,
+      });
+
+      // WHEN
+      // THEN
+      expect(() => {
+        new ecs.FargateService(stack, 'FargateService', {
+          cluster,
+          taskDefinition,
+          platformVersion: ecs.FargatePlatformVersion.VERSION1_2,
+        });
+      }).toThrow(/The pidMode feature requires platform version/);
+    });
+
     test('allows adding the default container after creating the service', () => {
       // GIVEN
       const stack = new cdk.Stack();