A company stores its data on premises. The amount of data is growing beyond the company's available capacity. The company wants to migrate its data from the on-premises location to an Amazon S3 bucket. The company needs a solution that will automatically validate the integrity of the data after the transfer. Which solution will meet these requirements?

AWS DataSync is the most suitable solution because it is designed for online data transfer between on-premises storage and AWS storage services like S3. DataSync automatically performs data integrity validation (checksums) during and after the transfer, ensuring data accuracy, which directly addresses a key requirement. AWS Snowball Edge is for large-scale offline data transfers, not online transfers, and while it offers integrity checks, it doesn't fit the "online data transfer" requirement. Amazon S3 File Gateway provides file-based access to S3 from on-premises applications but is not primarily a data migration service with built-in integrity validation for large-scale transfers. S3 Transfer Acceleration speeds up transfers over long distances but does not provide automatic, end-to-end data integrity validation for on-premises to S3 migrations.