In this video I explain the multi-tenancy architecture. The basic idea is to have a single instance of your application to serve multiple tenants or customers and the properties are this. This is as opposed to isolated or dedicated infrastructure.

Shared Instance
One database hosting multiple customers
Isolation at the application level
Can be multi-processes and multi-instances as long as they are pooled
Stateless

Tags
Multitenancy, software Multitenancy, Multitenancy explained, Multitenancy architecture
https://www.zdnet.com/article/defining-the-true-meaning-of-cloud/