Are you buying a software or license?

a license is a way for software manufacturers to make sure that bootleg software is not supported. You must have a license(for businesses) to run certain software. This applies when you have say...

Software licensing can take a number of different forms. Software can be licensed based on the number of computers that the software is loaded on or, as is common with network software the software...

If it is compatible with your system, does the job you need it to do, and doesn't have any security flaws or major bugs, then yes.

This is a license to use the software for an unspecified period of time. The license is paid for once and does not need to be renewed.

By purchasing a site license, a company can obtain the right to use multiple copies of software, which is a popular way for companies to provide software to employees.