PDF Development-Lifecycle-and-Deployment-Architect Study Guide

Designing the right sandbox strategy for the release is a best practice, as it helps to ensure the quality and consistency of the code/configuration across different environments. Regression testing is mandatory for each release, as it helps to verify that the existing functionality is not broken by the new changes. Maintaining a pre/post deployment checklist for each release is a best practice, as it helps to track the tasks and dependencies for each deployment. Release sign-off is not only required for Production, but also for other environments such as UAT and Staging. Publishing a release calendar for each phase of the release is not a best practice, as it may change due to unforeseen circumstances and create confusion.

 A Requirements Traceability Matrix is a document that links requirements to their sources and test cases, as well as the components that implement them. By using this artifact, a developer can easily find the purpose of an Apex class and the requirement it fulfills.

C and D are the correct answers, as they are the best strategies to address a critical production issue occurring in the middle of development. C is correct, as using a source control system to allow separate branches for current development and production bug fixes can help to isolate the changes and avoid conflicts or overwriting. D is correct, as refreshing a sandbox for replication of the issue and testing the use-case scenarios once the code is fixed can help to ensure the quality and functionality of the solution before deploying it to production. A is incorrect, as creating separate branches for current development and production bug fixes and deploying the fix with current development when ready can delay the resolution of the production issue and introduce new risks or errors. B is incorrect, as utilizing one branch for both development and production bug fixes to avoid out-of-sync branches and simplify deployment can create confusion and complexity in the code and make it harder to test and validate. You can learn more about these strategies in the Application Lifecycle and Deployment module on Trailhead.

 An application with many systems and inter-dependencies between components is a project situation that favors a waterfall methodology, as it requires a high level of planning and design upfront to ensure the integration and compatibility of the components. An application with regulatory compliance requirements to be validated by outside agencies is also a project situation that favors a waterfall methodology, as it requires a clear and detailed documentation of the requirements and specifications, as well as a formal and rigorous testing and validation process. An application in post-production, with incremental changes made by a small team is a project situation that favors an agile methodology, as it allows for faster and more frequent delivery of changes, as well as more flexibility and collaboration. An in-house application with a fixed team size, but an open timeline and flexible requirements is also a project situation that favors an agile methodology, as it allows for more creativity and experimentation, as well as more feedback and adaptation.