The billing unit of Azure Services that aggregates all the costs of the underlying resources. - ANSWER Azure Subscriptions An identity in Azure Active Directory (AAD) or a directory that is trusted by AAD, such as a work or school organization. - ANSWER Azure Accounts Also known as the account owner, this person is responsible for paying the subscription bill to Microsoft when it is due. Normally, this user has financial responsibilities in your company such as CFO, Accounts Payable Lead etc. - ANSWER Account Administrator Also known as the Service Owner. This user manages the services that run in Windows Azure. They will have access to and uses the Window Azure Developer Portal or Service Management API to orchestrate the applications and data running in Azure. Normally, the user is a developer, system administrator, or other IT person responsible for IT services in your company. - ANSWER Service Administrator When an enterprise becomes to large for a single Service Administrator, the Service Administrator can create this role for other IT administrators to help them out. They will have complete access to the subscription services. They can even add or delete other users in the same role. However, they cannot remove the Service Owner nor do they have access to payment/billing information. - ANSWER Co-Administrators The Microsoft recommended way to manage the permissions of your resources. However this will not work with Azure's classic deployment model. - ANSWER RoleBased Access Control Global Administrator - ANSWER Users who are assigned this role can read and modify