diff --git a/integration-tests/iac/lib/integration-tests-stack.ts b/integration-tests/iac/lib/integration-tests-stack.ts
index faf8151..965a789 100644
--- a/integration-tests/iac/lib/integration-tests-stack.ts
+++ b/integration-tests/iac/lib/integration-tests-stack.ts
@@ -242,6 +242,10 @@ class PythonStack extends cdk.NestedStack {
           restApiName: `${props.prefix}apigw-error-500-${suffix}`,
           handler: fn,
           proxy: true,
+          // REGIONAL avoids the account-wide 120-per-region quota on EDGE-type
+          // APIs, which every concurrently open PR's integration-test stack
+          // otherwise eats into (17 REST APIs per stack).
+          endpointConfiguration: { types: [apigateway.EndpointType.REGIONAL] },
         });
       }
     }
diff --git a/integration-tests/iac/lib/node-tracing-scenarios-stack.ts b/integration-tests/iac/lib/node-tracing-scenarios-stack.ts
index 7b7141e..67b49d1 100644
--- a/integration-tests/iac/lib/node-tracing-scenarios-stack.ts
+++ b/integration-tests/iac/lib/node-tracing-scenarios-stack.ts
@@ -264,6 +264,10 @@ export class NodeTracingScenariosStack extends cdk.NestedStack {
         restApiName: `${prefix}tracing-test-api-${runtimeName}`,
         handler: apiGatewayConsumer,
         proxy: true,
+        // REGIONAL avoids the account-wide 120-per-region quota on EDGE-type
+        // APIs, which every concurrently open PR's integration-test stack
+        // otherwise eats into.
+        endpointConfiguration: { types: [apigateway.EndpointType.REGIONAL] },
       });
 
       const apiGatewayProducer = new lambda.Function(this, `ApiGatewayProducerLambda-${runtimeName}`, {
diff --git a/integration-tests/iac/lib/python-tracing-scenarios-stack.ts b/integration-tests/iac/lib/python-tracing-scenarios-stack.ts
index f3672d4..c660186 100644
--- a/integration-tests/iac/lib/python-tracing-scenarios-stack.ts
+++ b/integration-tests/iac/lib/python-tracing-scenarios-stack.ts
@@ -281,6 +281,10 @@ export class PythonTracingScenariosStack extends cdk.NestedStack {
         restApiName: `${prefix}tracing-test-api-${runtimeName}`,
         handler: apiGatewayConsumer,
         proxy: true,
+        // REGIONAL avoids the account-wide 120-per-region quota on EDGE-type
+        // APIs, which every concurrently open PR's integration-test stack
+        // otherwise eats into.
+        endpointConfiguration: { types: [apigateway.EndpointType.REGIONAL] },
       });
 
       const apiGatewayProducer = new lambda.Function(this, `ApiGatewayProducerLambda-${runtimeName}`, {