A Software Developer wants to add a new feature to an existing application operating in the Cloud, but only wants to pay for the computing time the code actually uses when it is called. Which term describes this feature of computing?

It is a reference to the mode of operation of software where multiple independent instances of one or multiple applications operate in a shared environment. The instances (tenants) are logically isolated, but physically integrated.

Multitenancy can share the same:

Users

Displays

Rules

Database schemas

Multi-tenancy has seen a lot of cloud adoption and is used most with cloud computing. For example, in a multi-tenant public cloud, the same servers will be used in a hosted environment to host multiple users. Each user is given a separate and ideally secure space within those servers to store data. In a multitenant environment, multiple customers share the same application, running on the same operating system, on the same hardware, with the same data-storage mechanism. The distinction between the customers is achieved during application design, thus customers do not share or see each other's data.

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