The Ionic coding standards document provides guidelines for collaboration and code quality within Ionic projects. It outlines prerequisites for setting up local development environments for both Android and iOS platforms. It also recommends choosing an Ionic version compatible with your team's Angular version, understanding which platforms and form factors your app will support, and testing your app thoroughly using tools like Ionic Lab, emulators, and real devices. The document advises understanding Ionic's build process and options for improving performance like enabling native scrolling, adding Crosswalk for Android, and avoiding unstable plugins or older dependencies.