In this AWS re:Invent 2023 session, Mark and Mary discuss best practices for optimizing storage costs on AWS. They cover strategies for migrating from on-premises to the cloud, choosing the right storage solutions, and leveraging tools like S3 Storage Lens. Key topics include optimizing Amazon EBS volumes, utilizing Amazon FSx managed file systems, and implementing cost-effective S3 storage class architectures. The speakers provide real-world examples of how customers like Sysco, FINRA, and GE Healthcare have achieved significant cost savings and improved performance by adopting AWS storage solutions. They emphasize the importance of understanding workload requirements, access patterns, and object sizes when making storage decisions. The session offers valuable insights for both new and existing AWS customers looking to maximize the value of their cloud storage investments.