We are pleased to announce the alpha release of Mountpoint for Amazon S3, a new open source file client that delivers high throughput access, lowering compute costs for data lakes on Amazon S3. Mountpoint for Amazon S3 is a file client that translates local file system API calls to S3 object API calls like GET and LIST. It is ideal for read-heavy data lake workloads that process petabytes of data and need Amazon S3’s high elastic throughput to scale up and down across thousands of instances.