title: On Demand Linux t2.micro Instance Hour
body: <p>I'm hosting several websites on AWS and got the charge of On Demand Linux t2.micro Instance Hour for 690hrs. I've totally no idea about when I asked for this on demand instance. Is it like my free tier instance has used up so it automatically cost the on demand instance?</p>
  
  <p>Also another question is how can I know which website/ec2 instance actually cost me the on demand instance hour. I strongly believe that none of my website has large traffic.</p>