For this question, refer to the Dress4Win case study. Dress4Win is a web-based company that helps users organize and manage their personal wardrobe using a web app and mobile application. They have expanded from a few servers to several hundred in a colocated data center but now find their infrastructure insufficient for rapid growth. They aim to migrate to a public cloud to build a reliable and reproducible environment, improve security and IAM best practices, enhance business agility through rapid provisioning of new resources, analyze and optimize architecture for cloud performance, and support failover of the production environment to the cloud during emergencies. In the first phase, Dress4Win is moving their development and test environments to the cloud and building a disaster recovery site. The current environment includes MySQL servers, Redis clusters, web application servers, Hadoop/Spark servers, RabbitMQ servers, and miscellaneous servers for Jenkins, monitoring, bastion hosts, and security scanners. The company’s investors are concerned about scaling and cost management and are considering public cloud to achieve cost reduction between 30% and 50% over the next 5 years. Which of the compute services should be migrated as-is and would still be an optimized architecture for performance in the cloud?