title: When should I use a t2.medium vs. a m3.medium instance type within AWS?
body: <p>They appear to be approximately the same in terms of performance.</p>
  
  <p>Model   vCPU    Mem (GiB)   SSD Storage (GB)
  m3.medium   1   3.75    1 x 4 </p>
  
  <p>Model   vCPU    CPU Credits / hour Mem (GiB)     Storage
  t2.medium   2   24  4   EBS-Only</p>
  
  <p>t2.medium allows for burst-able performance whereas m3.medium doesn't. t2.medium even has more vCPU (1 vs 2) and memory (3.75 vs 4) than the m3.medium. The only performance gain is the SSD w/a m3.medium, which I recognize could be significant if I'm doing heavy I/O.</p>
  
  <p>Would this be the only scenario where I would choose an m3.medium over a t2.medium?</p>
  
  <p>I'd like to run a web server that gets 20-30k hits a month so I suspect either is okay for my needs, but what's the better option?</p>