A company has an NFS-style data store accessed by Linux systems and needs a hybrid solution so on-premises servers and SageMaker notebooks can share the data. File locking is required for data producers. Which AWS storage option satisfies these requirements?

Amazon EFS is the correct choice because it is a fully managed, scalable, NFS-compliant file system that supports file locking. It can be mounted to both on-premises servers (via AWS Direct Connect or VPN) and Amazon SageMaker notebooks, providing a seamless hybrid solution. Amazon S3 with Mountpoint does not support file locking, which is a critical requirement for data producers. Amazon FSx for Lustre is a high-performance file system optimized for HPC workloads and is not typically used for general-purpose hybrid cloud file sharing with file locking requirements across diverse environments. Amazon EBS volumes are block storage, not file storage, and cannot be directly mounted to multiple instances (including on-premises servers and SageMaker notebooks) simultaneously in an NFS-like manner.