This whitepaper contains additional guidance not found in the SaaS Lens of the AWS Well-Architected Tool.
Core isolation concepts
Part of the challenge of isolation is that there are multiple definitions of tenant isolation. For some, isolation is almost a business construct where they think about entire customers requiring their own environments. For others, isolation is more of an architectural construct that overlays the services and constructs of their multi-tenant environment. The sections below will explore the different types of isolation, and associate specific terminology with the varying isolation constructs.