A1 instances add to the broadest and deepest selection of EC2 instances. Developers can now access instances with the Arm instruction set and experience the flexibility, security, reliability, and scalability of running on EC2. Familiar AWS and Amazon EC2 capabilities, such as EBS, Networking, and AMIs work seamlessly with A1 instances.

A1 instances deliver significant cost saving for workloads that are supported by the extensive Arm ecosystem. These include general purpose workloads such as web servers, containerized microservices, caching fleets, and distributed data stores that that can be spread across multiple cores and can fit within the available A1 instance memory footprint.

A1 instances are built on the AWS Nitro System, a combination of dedicated hardware and lightweight hypervisor which delivers practically all of the compute and memory resources of the host hardware to your instances for better overall performance and security.

AWS Graviton Processors feature 64-bit Arm Neoverse cores and custom silicon designed by AWS delivering optimized performance and cost. AWS Graviton Processors are built exclusively for the cloud, utilizing AWS and Annapurna Labs' expertise in running hyperscale cloud platforms and cloud applications.

Next generation Elastic Network Adapter (ENA) and NVM Express (NVMe) technology provide A1 instances with high throughput, low latency bandwidth interfaces for networking and Amazon Elastic Block Store (Amazon EBS).

The AWS Nitro System is a rich collection of building blocks that offloads many of the traditional virtualization functions to dedicated hardware and software to deliver high performance, high availability, and high security while also reducing virtualization overhead.