Sure, but that bandwidth is very flexible also; you GET 800GB bandwidth mentioned in the above plan, but what if you just need 400GB...or 1600GB? AWS will scale

Sure, but that bandwidth is very flexible also; you GET 800GB bandwidth mentioned in the above plan, but what if you just need 400GB...or 1600GB? AWS will scale from your launch day till the day you go IPO, or at least are at the stage when you can buy terabytes of bandwidth in bulk, cause you know you'll use it. Really don't agree with the last part though...unless your code is really slow, a rewrite is only going to waste your time and focus your attention on the rewrite rather than developing your business. Defiantly improve as you go...most of us are geeks, we'd have a massive grin on our face if we saved a few milliseconds from each request, but you should only do it if it's actually worth it! :)