This document introduces Salesforce, a leading cloud-based CRM platform founded by Marc Benioff in 1999, covering its history, core services, and key terminology. It explains concepts like Platform as a Service (PaaS) and Software as a Service (SaaS), as well as the different types of relationships and design structures within Salesforce. Additionally, it highlights tools and services such as Sales Cloud, Service Cloud, and the Salesforce1 mobile application, alongside its multi-tenant architecture and metadata-driven development model.