AutoCAD Architecture (abbreviated as ACA) is a version of Autodesk's flagship product, AutoCAD, with tools and functions specially suited to architectural work.
Architectural objects have a relationship to one another and interact with each other intelligently.
In addition, intelligent architectural objects maintain dynamic links with construction documents and specifications, resulting in more accurate project deliverables.
Spaces and areas update automatically when certain elements are changed, calculations such as square footage are always up to date.
[1] AutoCAD Architecture uses the DWG file format but an object enabler is needed to access, display, and manipulate object data in applications different from AutoCAD Architecture.