How can the Solutions Architect improve the login experience and maintain high security and performance with minimal management overhead?
Replicate the setup in each new geography and use Amazon Route 53 geo-based routing to route traffic to the AWS Region closest to the users.
Use an Amazon Route 53 weighted routing policy to route traffic to the CloudFront distribution. Use CloudFront cached HTTP methods to improve the user login experience.
Use Amazon Lambda@Edge attached to the CloudFront viewer request trigger to authenticate and authorize users by maintaining a secure cookie token with a session expiry to improve the user experience in multiple geographies.
Replicate the setup in each geography and use Network Load Balancers to route traffic to the authentication service running in the closest region to users.
Explanations:
While replicating the setup in each geography with Route 53 geo-based routing could improve performance, it involves significant management overhead to maintain multiple instances of the authentication service across regions. This option does not directly address the login experience issue, which could be improved with a single, well-distributed solution.
Using a weighted routing policy with CloudFront does not improve the login experience since it does not address the geographical limitation of the authentication service. CloudFront caching can enhance performance for static content, but login actions typically require dynamic handling, which caching cannot effectively manage.
Utilizing Lambda@Edge for authentication at the CloudFront viewer request stage can significantly improve the login experience by handling authentication closer to the user. It allows for processing requests at the edge locations, reducing latency, and maintaining security through secure cookie tokens. This solution minimizes management overhead since it leverages existing CloudFront distributions without needing to replicate services in multiple regions.
Replicating the setup and using Network Load Balancers to route traffic adds complexity and management overhead. While it could improve performance by directing users to the nearest authentication service, it requires maintaining multiple setups and does not leverage the existing CloudFront infrastructure effectively for user authentication.
I evaluate that the answer is:
Use Amazon Lambda@Edge attached to the CloudFront viewer request trigger to authenticate and authorize users by maintaining a secure cookie token with a session expiry to improve the user experience in multiple geographies.