The purpose of the ACI AOS Interface Definition Working Group is to support and accelerate the ACI Data Dictionary initiative by:

• Identifying, prioritizing, and sequencing AODB‑related attributes, terms, and concepts that are most critical for real‑world data exchange; and
• Providing airport‑led guidance to help ACI move more quickly from attribute definition to usable interface and message models.

The group exists to ensure that ACI Data Dictionary outputs are driven by actual airport integration needs, particularly in the context of AODB replacement, modularization, and modern integration architectures.