An approach to implementing a software application where little or no software is installed and local computers, where the data is isolated between organizations a service computer is called .

Software as a Service is the correct answer of this question.

Explanation:

An method for applying a software program in which little or no software and local computers are built data is isolated between organizations called Software as a Service. It is a data delivery method which allows access to the information from every system with a Broadband connection and web surfing.

For example:- ZenDesk, DocuSign, Slack, Hubspot,Dropbox, MailChimp.

Technology as a System is a device delivery model in which a third-party vendor manages systems and puts them up over the Network to consumers.