AWS Certified Solutions Architect – Professional (SAP-C02) — Question 249

A company has a Windows-based desktop application that is packaged and deployed to the users' Windows machines. The company recently acquired another company that has employees who primarily use machines with a Linux operating system. The acquiring company has decided to migrate and rehost the Windows-based desktop application to AWS.

All employees must be authenticated before they use the application. The acquiring company uses Active Directory on premises but wants a simplified way to manage access to the application on AWS for all the employees.

Which solution will rehost the application on AWS with the LEAST development effort?

Answer options

• A. Set up and provision an Amazon Workspaces virtual desktop for every employee. Implement authentication by using Amazon Cognito identity pools. Instruct employees to run the application from their provisioned Workspaces virtual desktops.
• B. Create an Auto Scaling group of Windows-based Amazon EC2 instances. Join each EC2 instance to the company’s Active Directory domain. Implement authentication by using the Active Directory that is running on premises. Instruct employees to run the application by using a Windows remote desktop.
• C. Use an Amazon AppStream 2.0 image builder to create an image that includes the application and the required configurations. Provision an AppStream 2.0 On-Demand fleet with dynamic Fleet Auto Scaling policies for running the image. Implement authentication by using AppStream 2.0 user pools. Instruct the employees to access the application by starting browser-based AppStream 2.0 streaming sessions.
• D. Refactor and containerize the application to run as a web-based application. Run the application in Amazon Elastic Container Service (Amazon ECS) on AWS Fargate with step scaling policies. Implement authentication by using Amazon Cognito user pools. Instruct the employees to run the application from their browsers.

Correct answer: C

Explanation

Option C is correct because it utilizes Amazon AppStream 2.0, which allows for easy deployment and access to the Windows application without significant development effort. Options A and B require either setting up virtual desktops or managing EC2 instances, both of which involve more complexity and maintenance. Option D, while feasible, entails refactoring the application into a web-based format, which would require more development work than simply using AppStream 2.0.