To me, the most interesting strategic item was that the Celtics started with two bigs (something I have posted a lot about) and played most of the game with two bigs. That could be a specific reaction to the Bucks' match ups but I think it is more telling then that. To me, Smart, Brown, Tatum, Theis, Thompson is the way to start the game.
They did play with some pretty small 2-big units at times. I think for example the line up of Teague, Smart, Brown, Ojeleye, and another big worked pretty well. This was a reaction to Teague being "hot" (even though not a statistically validated term) and also to Ojeleye playing well.
Our bench played OK, thanks mostly to Teague but Semi also chipped in well. Neither Williams looked great but Robert played well enough to be a serviceable back up center and we only need one of Grant or Semi to play well on any given night so we were OK.
In summary, yes, we did get lucky, but the game wasn't close at the end by accident, it was close because we played well. Way to go Celtics. They are officially over-achieving so far this season.