Very ambient, indeed. There's some interesting use of the pads in the background - interestingly, they never really clash with anything, which is impressive, considering what chords are being made up in the background. Nice production values overall, too - no real empty spots in the soundscape or clipping, so nice work.
I really enjoy the drum work you have going at the end... but then it stops. I agree with Midimachine that it sounds like it's opening up to a new section, then it just dies. Would've loved to hear it go somewhere from there, but what you have is enjoyable for what it is, as well.