Further DOTS and ECS packages

Unity's data oriented technology stack (DOTS) uses several packages (including Entities), and parts of the Unity engine which work together to help you create high-performance code.

The main parts of Unity you need to use are:

• Entities (this package): An implementation of the Entity, Component, System (ECS) pattern.
• C# Job System: A solution for fast, safe, multi-threaded code.
• Burst compiler: A C# compiler that generates highly optimized code.
• Collections: A set of unmanaged collection types, such as lists and hash maps. They're useful in jobs and Burst-compiled code because those contexts can only access unmanaged data.
• Mathematics: A math library which is specially optimized in Burst-compiled code.

Built on top of these core parts are the following entity component system (ECS) packages:

• Unity Physics: A stateless and deterministic physics system for entities.
• Havok Physics for Unity: A stateful and deterministic physics system for entities.
• Netcode for Entities: A client-server netcode solution for entities.
• Entities Graphics: Uses the scriptable render pipeline (SRP) to render entities.