There's an app for that' is now passe'. Now, there's an extension for that. iOS extensions provide custom functionality and content beyond apps. For example, you can create an iOS extension to view Salesforce tasks in Today view or a watchOS extension to reply to Chatter messages . Join us to learn how to write App Cloud extensions using Swift and Salesforce Mobile SDK for iOS 10. You'll learn how to make your app interact with your extension, how to leverage the REST and Chatter APIs, and how to use custom UI components for imparting an SLDS-style look and feel to your extensions.