What's the difference between api key, client id and service account?
问题 I needed to access a Google's service, i.e. Google Analytics, from my Symfony 2 application, so I had to use the Google api client (version 2). Before accessing Google Analytics' info, I had to create either a api key, a client id or a service account in the Google API Console. At the end, I created a service account, and a file was downloaded. This file is used by the Google api client to grant access to my Google Analytics account and its respective collected info. My question are: What are