From what I have read today, the current poker bot programs do a lot of work in advance, and just follow decision trees when to raise, call and fold along that tree. They already know how they will bet with J10 suited before the flop when they are the first to act before the game starts.

The real challenge is the number of permutations of that, which raise memory requirements into the petabytes range. Not to mention multi-player games, and the no-limit version where betting gets more complex.

Not sure if having high-cpu instances at your disposal helps during game play.