The customer, who previously ran their business on two databases, AWS RDS and Druid.io, saw significant cost savings after moving to a single database, SingleStore. The new monthly cost is about $31,000, resulting in a savings of $62,000 per month or 66%. This move also brought increased performance, greater concurrency, and easier database management. SingleStore's flexibility allows it to run in various environments, including public clouds, private clouds, on-premises, and mixed environments, reducing the risk of "cloud lock-in". The customer was able to easily migrate from AWS RDS Aurora to SingleStore due to its compatibility with MySQL wire protocol. Additionally, SingleStore can augment existing databases like Aurora, allowing for faster performance and improved concurrency. Overall, this move resulted in a dramatic cost savings and strategic benefits for the customer.