After Effects Expression Language

After Effects Expression Language is a scripting tool that allows users to automate and control animations and effects within Adobe After Effects. It uses small snippets of code to define behaviors, relationships, and dynamic changes between objects, reducing the need for manual adjustments. These expressions enable precise, complex motion and effects that respond to various parameters, making animations more flexible and efficient. Think of it as a way to write simple "rules" that automatically shape how your visuals behave, adding a layer of customization and control beyond standard keyframing.