Multitenant Architecture is used by the majority of SaaS solutions. A single configuration, such as operating system, hardware, and network, is used by all customers with multitenancy. The application that serves customers via the internet and is installed on various machines.

However, some SaaS solutions do not use multitenancy and instead rely on another mechanism, such as virtualization, which is the act of creating a virtual version of something rather than a physical version, such as virtual hardware. This method eliminates the need for physical components.

Upskilling and staying current in the workplace require a Cloud Computing Course. 

A single version of the application with a single configuration is used for all customers in Software as a Service. The application is scalable and can be installed on multiple machines simultaneously.

It is a traditional model with a unique code for each version. Multitenancy is a key feature of SaaS.

However, some SaaS solutions do not use Multitenancy in order to save money. In the architecture, it can also be seen that updates and patches are handled by the provider, freeing the customer from them. Although it is delivered over the internet, there is no need to download updates or reinstall it.