Amazon Elastic Block Store (Amazon EBS)

Provide scalable, high-performance block storage resources that can be used with Amazon Elastic Compute Cloude (Amazon EC2) instances

EC2 Volume is a high-performance block storage service that provides persistent, durable storage for Amazon EC2 instances. Unlike instance store volumes that are temporary and tied to the physical host, EBS volumes exist independently of any particular EC2 instance and can be attached, detached, and reattached to different instances as needed.

Reference

overmind.tech - EC2 Volume: A Deep Dive in AWS Resources & Best Practices to Adopt

With EBS you can create and manage:

EBS Volumes - Storage volumes that you attached to EC2 instances, able to use it in the same way as a local hard drive attached to a computer, for example to store files or to install applications.
EBS Snapshots - Point-in-time backups of Amazon EBS volumes that persist independently from the volume itself. You can create snapshots to back up the data on EBS volumes and can restore new volumes from those snapshots at any time. You can then use those snapshots to instantly restore volumes or to migrate data across AWS accounts, AWS Regions, or Availability Zones.

Features of Amazon EBS

Multiple volume types - SSD-backed storage for transactional workloads, HDD-backed storage for throughput intensive workloads.
Scalability - Create on your needs for capacity and performance specifications.
Backup and recovery - Use EBS snapshots to back up the data stored on your volumes.
Data protection - Use Amazon EBS encryption to encrypt EBS volumes and EBS snapshots.
Data availability and durability
Data archiving