Software as a Service (SaaS) is used to offer different kinds of software

applications in a Cloud environment. Generally these are offered on

subscription basis. Different modes of SaaS are:

Simple multi-tenancy: In this setup, each client gets its own resources. These

resources are not shared with other clients. It is more secure option, since

there is no sharing of resources. But it an inefficient option, since for each

client more money is needed to scale it with the rising demands. Also it takes

time to scale up the application in this mode.

Fine grain multi-tenancy: In this mode, the feature provided to each client is

same. The resources are shared among multiple clients. It is an efficient mode

of cloud service, in which data is kept private among different clients but

computing resources are shared. Also it is easier and quicker to scale up the

SaaS implementation for different clien

https://www.quora.com/Explain-the-various-modes-of-software-as-a-Service-SaaS-cloud-environment#:~:text=There%20are%20two%20modes%20of,are%20shared%20by%20many%20users.