Does being placed in a space trigger a Hazard?

I'm thinking about Ambuscade, Proletariat and Unity's bots. I'm not sure if being placed on the board from off the board counts as entering a space.

I've been ruling that it did. It triggers off of entering a hex, or ending your turn on the hex. Being placed on the map is entering the hex just the same as moving onto the hex is. In my games so far, it's only been in the case of Drone Deployment onto Impaling Structures, but it should apply the same way.

Yep. Entering play into a hazard definitely counts. Great for Proletariat surrounding someone instantly.

note that standing up from incapacitation does not count as entering a space.