With the $\_\_\_\_\_\_\_\_$ model, customers rent servers, operating systems, storage, a database, software development technologies, and network capacity over the Internet.

Select answer from the options below

platform$-$as$-$a$-$service

software$-$as$-$a$-$service

storage$-$as$-$a$-$service

infrastructure$-$as$-$a$-$service