At its core, Azure is a public cloud computing platform—with solutions including Platform as a Service (PaaS), and Software as a Service (SaaS).
Cloud computing is perhaps the most brilliant technological innovation of the 21st century. This is because it has seen the fastest adoption into the mainstream than any other technology in the domain. Azure is a public cloud computing platform, furthermore, it is an open and flexible cloud platform that serves as the development, data storing, service hosting, and service management environment.