The DOTS is the peak of Unity's effort to push Unity into the future of gaming. I firmly believe that in the future, DOTS will be a core component of any optimization effort, and this chapter will definitely grow into several ones while DOTS becomes more stable and is supported by the community.
Unfortunately, at this stage, C# jobs and ECS are still very unstable, their APIs are changing rapidly and, therefore, I do not advise using them in big, important, commercial games. However, I believe it is important to start experimenting with them so as to be ready for when their time comes.
This chapter merely scratches the surface of the DOTS. There are many more details, configurations, and optimizations that can be implemented both in jobs and ECS. For more information, the main Unity Hub for DOTS (https://unity.com/dots) is your best friend.
This chapter effectively...