I recently learned that AWS Cognito can handle security and authentication. Is it true that AWS Cognito can manage these aspects for my application? If I have an existing app that currently has no authentication or authorization, can I integrate it with AWS Cognito to cover all authentication and authorization needs? Additionally, what are the key features of AWS Cognito that I should be aware of?

In my springboot application i use this aws paramstore and mentoned them in the application.properties file. similarly for unit testing, that is especially for integration testing that is for controller class alone. i got the below errors. how to solve them or is it possible to disable the aws param in my unitesting alone? if yes how to do that?

I created a key in AWS KMS key vault programmatically using Java SDK.