Investigate how to integrate Amazon Cognito Service with the core application

[lealceldeiro]

• The Core application tentatively should use authentication/authorization by token, so it allows requests from clients (SPAs, android apps, etc) independently of their implementation.

• https://aws.amazon.com/cognito/ seems to be a good start

[lealceldeiro]

Useful link: https://thenewstack.io/understanding-aws-cognito-user-and-identity-pools-for-serverless-apps/