A company has 60 TB of software images stored on-premises in Europe and wants to move them to an Amazon S3 bucket in the ap-northeast-1 Region. New images are produced daily and must be encrypted in transit. The company wants an automated solution that requires no custom development to transfer both the existing data and future images to S3. What is the next step in the transfer plan?

AWS DataSync is the most suitable solution because it's designed for automated, secure, and efficient data transfers between on-premises storage and S3, without custom development. It supports encryption in transit and can handle both initial bulk transfers and ongoing incremental updates for new images. Amazon Kinesis Data Firehose is for streaming data, not large files like software images, and S3 Transfer Acceleration only speeds up transfers to S3, it doesn't provide the full transfer mechanism. AWS Snowball is for large-scale offline data migration, which is not ideal for ongoing daily transfers. Transferring via Site-to-Site VPN with S3 API requires custom scripting for automation and ongoing synchronization, which the requirement explicitly avoids.