This document provides information about building apps for the Salesforce AppExchange. It highlights that the AppExchange marketplace has over 1,700 apps and 20,000 customer reviews. It notes that 70% of Fortune 100 companies use apps from the AppExchange. The document then discusses resources Salesforce provides to help developers, including the App Academy for training, roadmap webinars for product insights, and marketing office hours for positioning apps. It also outlines the benefits of distributing apps through the AppExchange, such as access to over 100,000 customers, marketing support, and an automated billing process.