The correct answer is Decouple components because microservices architecture is fundamentally based on the principle of decoupling components.

Explanation:

• Decouple components means designing systems where individual components operate independently and communicate through well-defined interfaces
• This aligns perfectly with microservices architecture where each service is:
  • Independently deployable
  • Loosely coupled
  • Focused on a single business capability
  • Communicates via APIs
• The other options are also AWS Cloud design principles but don't specifically support microservices:
  • Think parallel: Focuses on parallel processing and distributed computing
  • Implement elasticity: Focuses on scaling resources up and down based on demand
  • Stop guessing capacity: Focuses on right-sizing resources and avoiding over-provisioning

Microservices architecture inherently requires decoupled components to achieve the benefits of independent development, deployment, and scaling.