{
  "AWSInstanceType2Arch" : {
    "t1.micro"    : { "Arch" : "64" },
    "m1.small"    : { "Arch" : "64" },
    "m1.medium"   : { "Arch" : "64" },
    "m1.large"    : { "Arch" : "64" },
    "m1.xlarge"   : { "Arch" : "64" },
    "m2.xlarge"   : { "Arch" : "64" },
    "m2.2xlarge"  : { "Arch" : "64" },
    "m2.4xlarge"  : { "Arch" : "64" },
    "c1.medium"   : { "Arch" : "64" },
    "c1.xlarge"   : { "Arch" : "64" }
  }
}