This guide helps early-stage startups choose between building or buying scalable AWS data platforms by evaluating time, cost, skills, and compliance, offering architectures, a 90-day roadmap, and GenAI readiness.

AWS startups must balance rapid growth with operational maturity by prioritizing key data processes, using scalable tools like S3 and Athena, controlling costs via FinOps, and enforcing governance and security for sustainable growth.