At least in 2013, you can cancel it (my client did) and Azure has a default spending limit for trial accounts which, unless you remove, never gets you charged i

At least in 2013, you can cancel it (my client did) and Azure has a default spending limit for trial accounts which, unless you remove, never gets you charged if you consume the trial usage and simply suspends your account. On the other hand, AWS doesn't have a spending limit concept for even free, one-year micro instance trial last I checked.