A: In the SDLC, Workday employs different types of tenants to facilitate the development, testing, and deployment of components. The stages include development, testing, user acceptance testing (UAT), and production. Workday maintains at least five types of tenants: sandbox, development, testing, support, and production. Each type serves a specific purpose in the SDLC, allowing for comprehensive testing, validation, and progression of components from development to production.