EBS Snapshots are point-in-time images of EBS volumes, only saving volume data, not instance settings or OS details.Snapshots are cost-efficient as they are incremental, making them useful for backing up important data like database volumes.AMIs are full copies of EC2 instances, including the OS, volumes, apps, and settings, useful for recreating or scaling entire instances.Volumes restored from snapshots can be slow initially, but enabling Fast Snapshot Restore pre-warms the data for faster performance at an extra cost.