1. The document discusses Facebook Pixel and App Events for tracking user activity on websites and mobile apps. It provides documentation links and examples of how to implement Facebook Pixel and App Events using code snippets.
2. Implementation instructions are given for both Facebook Pixel for tracking website activity and standard events, as well as Facebook App Events and standard events for tracking activity within mobile apps.
3. Code examples and documentation links are provided to demonstrate how to install tracking pixels and SDKs and measure standard events and custom events within both websites and mobile apps using Facebook analytics tools.