Discover which AWS Well-Architected Framework best practice is applied when transitioning from a monolithic application to microservices. Learn about the benefits of implementing loosely coupled dependencies to improve scalability and maintainability.
Table of Contents
Question
A company is running an on-premises monolithic application that does not scale and is difficult to maintain. The company has a plan to migrate the application to AWS and break it into microservices. Which AWS Well-Architected Framework best practice is the company following with this plan?
A. Integrate functional testing as part of deployment into AWS.
B. Use automation to make changes.
C. Deploy the application in multiple locations.
D. Implement loosely coupled dependencies.
Answer
D. Implement loosely coupled dependencies.
Explanation
The company is following the best practice of implementing loosely coupled dependencies by migrating the application to AWS and breaking it into microservices. Loosely coupled dependencies are a design principle of the AWS Well-Architected Framework that helps reduce interdependencies between components and improve system scalability, reliability, and performance.
When a company transitions from a monolithic application to a microservices architecture, it aligns with the AWS Well-Architected Framework’s principle of implementing loosely coupled dependencies. This approach is foundational to designing scalable, maintainable, and resilient systems in the cloud.
Why Loosely Coupled Dependencies?
- Independence of Components: In a microservices architecture, each service operates independently, reducing interdependencies. If one service fails, it does not affect the entire system, unlike monolithic applications where tightly coupled components can lead to cascading failures.
- Scalability: Each microservice can be scaled independently based on demand, optimizing resource utilization and cost.
- Maintainability: Smaller, modular services are easier to update or replace without impacting other parts of the application.
- Faster Development Cycles: Teams can work on different services simultaneously, accelerating innovation and deployment.
How Does This Relate to AWS?
AWS provides tools and services that facilitate the migration and implementation of microservices:
- Amazon ECS/EKS: For containerized microservices.
- AWS Lambda: For serverless microservices.
- Amazon API Gateway: To manage communication between services.
- Amazon SQS/SNS: To enable asynchronous communication between loosely coupled components.
Transitioning from a monolithic application to a microservices architecture exemplifies the AWS Well-Architected Framework’s best practice of implementing loosely coupled dependencies. This approach enhances scalability, resilience, and maintainability—key benefits for modern cloud architectures. By leveraging AWS’s robust ecosystem of services, organizations can achieve these goals efficiently while adhering to cloud-native best practices.
By adopting these tools, organizations can modernize their applications effectively while adhering to best practices outlined in the AWS Well-Architected Framework.
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