What is the purpose of an Exchange Autodiscover?

What is the purpose of an Exchange Autodiscover?

• It is the Microsoft version of an MX record, which tells the interwebs where mail goes and stuff...
• To pool then auto populate mail info into outlook.
• allow exchange OWA to allow users easier login.
• to establish initial connections to Exchange user mailboxes. 

EXPLANATION

Exchange Autodiscover is a web service that helps Microsoft Exchange administrators configure user profile settings for clients running Outlook 2007, Outlook 2010, or Outlook 2013 and mobile phones running Windows Mobile 6.1 or later.
Introduced in Exchange Server 2007, the primary purpose of the Exchange Autodiscover service is to establish initial connections to Exchange user mailboxes. Once

SOURCE

https://searchwindowsserver.techtarget.com/definition/Exchange-Autodiscover-service