2. Amazon Machine Image (AMI) - An Amazon Machine Image (AMI) is an encrypted file stored in Amazon S3. It contains all the information necessary to boot instances of your software. 一種儲存在Amazon S3上的加密檔(這裡我理解為鏡像吧),裡面包含了啟動你的應用軟體時所必須的所有資訊。
3. Instance - The running system based on an AMI is referred to as an instance. All instances based on the same AMI begin executing identically. Any information on them is lost when the instances are terminated or if they fail.實例是指基於AMI上運行的系統。
4. S3 - Amazon Simple Storage Service:Amazon Simple Storage Service provides a fully redundant data storage infrastructure fo r storing and retrieving any amount of data, at any time, from anywhere on the Web.