What cloud services i need for a wordpress blog with thousands visits daily? [closed]

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http://serverfault.com – i registered for 60day free trial AWS ec2. there are several services beside ec2 on AWS like dynamoDB etc. i want to know what services i need to pay for my word press blog with several thousands visitors daily ? just ec2 and dynamoDB ? also i don't know when my trial expire how i just buy those services, AWS CP is very confusing (HowTos)