In this AWS re:Invent 2023 session, Tod Golding explores the unique challenges of building scalable and resilient multi-tenant SaaS architectures. He discusses strategies for managing varying workloads, deployment models, and tenant profiles while balancing efficiency and performance. Golding emphasizes the importance of considering business requirements alongside technical solutions, and introduces concepts like pod-based scaling and tenant isolation. The talk covers approaches to onboarding, deployment, and operational visibility in multi-tenant environments. Golding also stresses the need for robust testing and validation of scaling and resilience mechanisms. This comprehensive overview provides architects with a framework for designing efficient, scalable SaaS solutions on AWS.