Cloud computing can have many components selections and levels. Briefly review something in cloud computing and share it in this discussion.

A) Infrastructure as a Service (IaaS) allows users to rent IT infrastructure like servers and storage.
B) Platform as a Service (PaaS) provides a platform allowing customers to develop, run, and manage applications.
C) Software as a Service (SaaS) offers software applications over the internet on a subscription basis.
D) Cloud computing eliminates the need for any physical hardware.