In the previous section, you learned about multitier architecture; however, the same architecture that is built for a single organization is also called a single tenancy. Multi-tenant architecture is becoming more popular as organizations adopt the digital revolution while keeping the overall application cost low. The Software-as-a-Service (SaaS) model is built on a multi-tenant architecture, where a single instance of the software and the supporting infrastructure serve multiple customers. In this design, each customer shares the application and database, with each tenant isolated by their unique configuration, identity, and data. They remain invisible to each other while sharing the same product.
As multi-tenant SaaS providers own everything from the hardware to the software, SaaS-based products offload an organization's responsibilities to the maintenance and updates of the application, as this is taken care by the SaaS provider. Each...
