AWS Operating Margin Expansion Signal

AWS ($100B+ annual revenue, 30-40% operating margins) is Amazon's primary value driver — analysts who model Amazon as a sum-of-parts consistently derive AWS-alone valuations that represent 70-90% of the total market cap.

AWS margin expansion beyond structural ceilings (previously thought to be 35%) signals pricing power and operational leverage that the market systematically underestimates.

The margin expansion mechanism operates through fixed cost leverage:

AWS infrastructure costs are highly fixed (data center depreciation, staff), while revenue scales with customer workload growth.

Each 1% margin expansion at current AWS revenue equals ~$1B in additional operating income — at a 25x multiple, that's $25B in market cap creation per point of margin expansion.