Work architecture is the deliberate design of how work gets done: what enters the system, who touches it, where decisions happen, and where handoffs break. An org chart shows people and authority; work architecture shows the work itself. A workflow traces one path through it, a function groups similar work, and a WorkDesk is where people and agents use the plans.
Building a house makes the point. You can hire great people and buy good materials and still end up with a weird house if nobody designed the layout. If the kitchen lands in the wrong place and the hallway cuts through the bedroom, the house feels broken even though every trade did good work.
Why you care
The blunt question is whether you designed the way work gets done or just grew into the current mess. AI raises the stakes because it can’t see the hallway that only exists in your head: invisible steps, owners, and decisions force the agent to guess, which is why making work visible is the floor for useful AI work. Good architecture tells an agent what room it’s in, what counts as done, and when to stop and ask a person.