To access the cloud instances discovery options click Cloud on the left pane of the Discovery Center Options view.

Besides SQL Server login, discovering and adding instances require the same set of credentials. When registering (adding) and instance we are also asking for the sql server login (which we are not asking for during discovery).

There are 2 scenarios
Scenario 1: Instance is discovered using cloud account. In this case, the account is already associated with this instance so API calls will be using this account

Scenario 2: Instance is not discovered, but added directly from add instance screen
in this case, api will be using account details added via add instance wizard

When adding an instance, the cloud details are optional. User can choose not to add these. If they do not specify the cloud account details, the following metrics cannot be retrieved
starting from line number 56 to 67 in this doc:
https://docs.google.com/spreadsheets/d/1BmIdiQ0X9ebjLIQN7SLMJxbqn_QNeKy4szHl71oDrcc/edit?ts=5bb269f8#gid=0

Sql server login in mandatory when registering an instance

Discovering Amazon Instances

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Adding an Amazon account

For Amazon: "Specify the account to be used to connect to the Amazon EC2 or RDS instance. Amazon account information is needed to collect performance metrics. Please note that you may see charges from Amazon for Cloudwatch API requests. Click here [insert url to wiki page] for more information."

Click Add Amazon Account and enter the following information on the Amazon Account dialog.

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