What are AOS in AX & D365FO

 

AOS in AX & D365FO

The Microsoft Dynamics AX / D365FO (Finance & Operations) Object Server (AOS) is the second-tier application server in the Microsoft Dynamics AX three-tier architecture.

The AX 2012 3-tier environment is divided as follows:

1. First Tier – Intelligent Client
2. Second Tier – AOS
3. Third Tier – Database Server

In D365FO N-tier environment is divided as follows:

1. X-Tier – AOS, and Batch servers
2. X-Tier – Database Server 

In an N-tier solution, the database runs on a server as the X tier; the AOS handles the business logic, Batch jobs/ background process in multiple tiers, and handles the user interface and necessary program logic.