Why do not exchanges host the features in their own site as services,
why do they let 3rd party bots run instead of providing the possibilities themselves?
i think every exchanges have each of bots to control the markets beside of the traders using their bots too but exchanges don't tell the truth if they are using bots. with exchanges let the 3rd party using bots for doing trading, they hope that 3rd party can help the exchanges to make profits for the fee because when traders doing buy or sell orders, then they should pay some fee and its including as profit for the exchanges and they won't let this profit is gone.
We can expect exchanges will start selling some of bots based services to their traders like reporting/scheduling kind of routine work based bots.