The digital marketing agency is upgrading its database infrastructure to handle transactional batch data more efficiently. They are using Amazon Web Services (AWS) for their scalable application, which requires massive horizontal scalability and advanced monitoring capabilities. The agency faces challenges with MySQL's table-level locking, lack of traceability, and suboptimal query performance, leading them to migrate to YugabyteDB Aeon. This database solution provides horizontal scaling, vertical scaling, and advanced monitoring features, such as GIN indexing, sharding, parallel queries, and real-time alerts. The agency leverages these capabilities to build a highly scalable and performant email marketing solution that meets their business objectives and supports large-scale email campaigns.