Appian recommends a minimum number of environments to support the application development lifecycle. How many environments are recommended?

• A. One
• B. Three
• C. Two
• D. Four

Answer: (B)

Separating environments to support the lifecycle allows development to proceed without impacting users, while providing dedicated spaces for testing and for production stability. The minimum setup includes a development environment for building and iterating features, a testing/QA environment to validate changes against realistic configurations and catch issues, and a production environment where end users interact with the live app. This three-environment model gives you proper change control, reproducible testing, and a stable production surface. Having only one or two environments would blur these boundaries and increase risk, while four environments would be extra (staging/UAT) beyond the minimum.