I wish to know what are the limitations set by Amazon for there free tier account. I recently received a call from them stating in a given month I can use their service for only 750 hours. I am still trying to locate the right path in Amazon web services, which could guide me with the set forth limitations they have in there free tier account. 750 hours is subject to all their services, or does it limit to some of them. Amazon told me that they will drop me an email, what comes in the scope of free tier account but I never heard from them. Looking for support on the same.