This document provides an overview of Salesforce1 and Salesforce Lightning. Salesforce1 is a platform and mobile app that allows users to access Salesforce from any device with a lightweight mobile interface. It can be used to create customer and employee applications, connect products, and build company communities. Salesforce Lightning is the next generation of the Salesforce platform that features a new streamlined user interface designed to work across any screen size or device, along with components, an app builder, process builder, and schema builder to more easily develop applications.