Events Are Your Friends: Coders Escape 'Callback Hell'br Atlassian - Maritim Hotel Berlinbr If you're a JavaScript developer, you can't miss this session. Atlassian Connect presents some challenges that might be new to JavaScript developers, like third-party cookie policy, window.postMessage, and sending data between multiple iframes, just to name a few. This session will address these challenges and offer practical tips from the trenches of building new add-ons with Atlassian Connect.