Task 1.3: Understand the benefits of and strategies for migration to the AWS Cloud.

• ARefactor (re-architect)

  Incorrect

  Refactoring changes the application's architecture to use cloud-native features. It is the most complex strategy and the opposite of "no changes".

• BRepurchase

  Incorrect

  Repurchasing replaces the application with a different product, such as a SaaS version. Here the same applications move.

• CRehost

  Correct

  Rehost, also called lift and shift, moves applications to AWS without making any changes to them — what a deadline-driven move of many machines calls for.

• DRetire

  Incorrect

  Retiring decommissions applications that are no longer needed. These applications are still needed; they are being moved.

The 7 Rs are retire, retain, rehost, relocate, repurchase, replatform and refactor. "Move unchanged" is rehost; modernizing can come after the move.

• APeople perspective

  Correct

  The People perspective bridges technology and business, with a focus on culture, organizational structure, leadership and workforce, so that learning and change become business as normal.

• BPlatform perspective

  Incorrect

  The Platform perspective is about building a scalable hybrid cloud platform, modernizing workloads and implementing cloud-native solutions.

• CGovernance perspective

  Incorrect

  The Governance perspective orchestrates cloud initiatives to maximize benefits and minimize transformation-related risks.

• DOperations perspective

  Incorrect

  The Operations perspective makes sure cloud services are delivered at a level that meets the needs of the business.

AWS CAF groups its capabilities into six perspectives: Business, People, Governance, Platform, Security and Operations. Skills, culture and organization belong to People.

• AReduced business risk

  Correct

  AWS CAF names reduced business risk among the key business outcomes, together with improved ESG performance, increased revenue and increased operational efficiency.

• BAWS takes over all security responsibilities for the company's workloads

  Incorrect

  Security stays shared: AWS secures the cloud itself, and the customer remains responsible for security in the cloud, such as its data and access.

• CA fixed monthly bill that stays the same whatever the usage

  Incorrect

  Cloud costs are variable: you pay only when you consume resources, and only for how much you consume.

• DStaff no longer need new skills or a new way of working

  Incorrect

  The opposite: AWS CAF has a whole People perspective for culture, organizational structure, leadership and workforce change.

• EImproved environmental, social and governance (ESG) performance

  Correct

  Improved ESG performance is one of the key business outcomes AWS CAF lists for cloud transformation.

AWS CAF names four key business outcomes: reduced business risk, improved ESG performance, increased revenue and increased operational efficiency.

• ARehost

  Incorrect

  Rehosting moves the application unchanged, for example the same virtual machine onto Amazon EC2, where the company would still run the database itself.

• BRetain

  Incorrect

  Retaining keeps an application in the source environment for now. This database is being moved.

• CRefactor

  Incorrect

  Refactoring changes the application's architecture to use cloud-native features. Here the application stays the same.

• DReplatform

  Correct

  Replatforming moves an application while adding some optimization, such as moving to a fully managed service. A self-managed database moved to Amazon RDS is the classic example.

"Lift, tinker and shift": the database moves to a managed service so AWS takes over backups and patching, while the application stays as it is.

• ARetain

  Incorrect

  Retaining keeps an application in the source environment, for example because it is not ready to move. Keeping an unused tool running keeps its costs and risks too.

• BRehost

  Incorrect

  Rehosting moves the application to AWS unchanged — paying to run, in the cloud, a tool nobody uses.

• CRetire

  Correct

  Retiring decommissions applications with no business value. AWS lists no inbound connections in the last 90 days as a common sign.

• DRelocate

  Incorrect

  Relocating moves servers to a cloud version of the same platform. It still keeps the application running.

The cheapest migration is the one you do not do. Discovery often finds applications that can simply be switched off.