> Understanding SDK7 architecture and ECS

# SDK7 Architecture

Understand the Entity-Component-System (ECS) architecture that powers SDK7. This section explains the core concepts and patterns used throughout the SDK.

## What You'll Learn

* Entities and Components fundamentals
* Systems and game loops
* Creating custom components
* Querying components efficiently
* Data-oriented programming principles
* Subscribing to component changes

Understanding the architecture helps you write more efficient, maintainable code for your Decentraland scenes.