This document discusses how AWS has enabled the startup ecosystem by lowering costs and increasing innovation opportunities for startups. It summarizes that AWS allows startups to (1) experiment more and develop faster by launching infrastructure quickly and cheaply, (2) achieve full scalability by scaling servers and storage elastically as needed, and (3) reduce costs and grow revenue by paying only for resources used and leveraging AWS's large scale. The document provides examples of startups like Pinterest that were able to grow rapidly using AWS.