A company has an on-premises MySQL transactional database to migrate to AWS. The migrated database must remain compatible with the company's applications and must scale automatically during demand spikes. Which migration solution meets these requirements?

The correct solution is to use AWS DMS to migrate to Amazon Aurora and enable Aurora Auto Scaling. AWS DMS facilitates the migration of the existing MySQL database to AWS. Amazon Aurora is a MySQL-compatible relational database service, ensuring application compatibility. Aurora's serverless and auto-scaling capabilities allow it to automatically adjust capacity based on demand, handling spikes efficiently without manual intervention. Using native MySQL tools to migrate to Amazon RDS for MySQL with elastic storage scaling only addresses storage, not compute scaling for demand spikes. Migrating to Amazon Redshift is incorrect because Redshift is a data warehouse, not a transactional database, and would break application compatibility. Migrating to Amazon DynamoDB is also incorrect because DynamoDB is a NoSQL database, which is not compatible with a MySQL transactional database without significant application re-architecture.