title: Office 365 subscription: Associate Azure AD Application created for OAuth
body: <p>I am a bit confused with Office 365 subscriptions and the application I have created in Azure AD for OAuth.</p>
  <p>I have programmatically created an Azure AD app for OAuth and have assigned it appropriate permissions for Graph API and EWS API. The app is working perfectly fine with the Dev tenant I have for my testing. I am able to programmatically access OneDrive and Mailboxes using the token created by this application.</p>
  <p>Now I am not sure if I need to associate this app with Office 365 subscriptions. Currently, my dev tenant does not have any Azure / Office 365 subscriptions but users in the field may have Azure / Office 365 subscriptions.</p>
  <p>I am not sure if I need to perform any specific checks for subscriptions and associate my app with any. Information I found on the net is confusing and I am unable to conclude anything from it.</p>
  <p>Please let me know if you have any idea about this. I am a bit new to this whole thing so forgive my ignorance.</p>