AWS CDK not deploying API Gateway change (EDGE to REGIONAL) - aws-api-gateway

Question

I'm experimenting with AWS CDK by converting a console-developed application (just API Gateway and Lambdas for now). All is well--I can hit the API's resources and methods and the appropriate lambdas get executed.
I'm trying to understand what triggers a deployment (and what doesn't). For example, if I try to change the API's endpoint type from the default (EDGE) to REGIONAL:
const api = new apigateway.RestApi(this, "cy-max-api", {
restApiName: "CY Max Service",
description: "CDK version of Max AWS demo app.",
endpointConfiguration: [EndpointType.REGIONAL] // <-- add only this line and deploy
});
and deploy (cdk deploy), nothing is deployed (I checked the logs, console says no stack changes). I even tried forcing the deploy (cdk deploy -f)--no joy.
I suspect this is the expected behavior, but would like to understand why this change doesn't trigger a deploy (and what would be necessary to force one).
Update based on response by #balu-vyamajala (thanks for taking the time to test it).
I am using version 1.82.0 of the CDK. Here's the result of cdk diff when the only change is adding the endpointConfiguration line:
Stack CyMaxStack
Resources
[-] AWS::ApiGateway::Deployment CyMaxcymaxapiDeploymentD64E3EA0186ed2bffe1dbc3004a8457d0ce5eb28 destroy
[+] AWS::ApiGateway::Deployment CyMax/cy-max-api/Deployment CyMaxcymaxapiDeploymentD64E3EA0cd62c1e6cd1229987f977199cc5906ea
[~] AWS::ApiGateway::RestApi CyMax/cy-max-api CyMaxcymaxapi48ECF39D
└─ [+] EndpointConfiguration
└─ {}
[~] AWS::ApiGateway::Stage CyMax/cy-max-api/DeploymentStage.prod CyMaxcymaxapiDeploymentStageprod5291AAF0
└─ [~] DeploymentId
└─ [~] .Ref:
├─ [-] CyMaxcymaxapiDeploymentD64E3EA0186ed2bffe1dbc3004a8457d0ce5eb28
└─ [+] CyMaxcymaxapiDeploymentD64E3EA0cd62c1e6cd1229987f977199cc5906ea
and here's what cdk deploy says:
CyMaxStack: deploying...
[0%] start: Publishing 6280a7c7fbc87dd62aeb85e098d6de2f0b644eea442dcbfc67063a56c08ce151:current
[100%] success: Published 6280a7c7fbc87dd62aeb85e098d6de2f0b644eea442dcbfc67063a56c08ce151:current
CyMaxStack: creating CloudFormation changeset...
[█████████████████████████████·····························] (5/10)
✅ CyMaxStack
Outputs:
CyMaxStack.CyMaxcymaxapiEndpoint52D905B0 = https://...my URL...
Stack ARN:
arn:aws:cloudformation:us-west-1:...my ARN...
When I check the console the API has not been updated to REGIONAL. Also, endpointConfiguration is either missing, or {} in cdk.out/tree.json. I never see {REGIONAL} in that file.

Answer 1

I am guessing you are asking about update to AWS::ApiGateway::Deployment which doesn't automatically happen and cdk generates a hash of methods and resources to append to resource name to force deployment.
But in your case, EndpointConfiguration is a property of AWS::ApiGateway::RestApi which is directly referred in AWS::ApiGateway::Deployment. Irrespective of any other changes, it must trigger a new Deployment.
which version of cdk you are using?
I just tested it with 1.80.0, it did trigger a change in three resources AWS::ApiGateway::Deployment, AWS::ApiGateway::Stage and AWS::ApiGateway::RestApi.
Please try cdk synth and observe generated CloudFormation for resource AWS::ApiGateway::RestApi before and after compiling your change