This document provides an overview of cloud platforms and technologies. It discusses the major cloud vendors including Microsoft Azure, Amazon Web Services, Google Cloud Platform, Salesforce, IBM, and VMware. It describes the common services offered like compute, storage, databases, and analytics tools. It outlines how these platforms are becoming the new default infrastructure for enterprise applications and IT. Hybrid cloud strategies combining on-premises and public cloud are also examined. The conclusion emphasizes that choosing a cloud platform partner is an important decision for how enterprises will handle their infrastructure going forward.