A survey of different ways of querying your world for information. Your AI usually needs to know what is going on and where to make good decisions and here we talk about the different possible ways of doing it.
https://dev.epicgames.com/community/learning/tutorials/1J2j/unreal-engine-what-s-going-on-in-the-world-the-different-mechanisms-of-spatial-decision-making-in-games