Reading Time: 3 minutes During the last AWS re:Invent 2018, Amazon Web Services (AWS) has announced new EC2 Instances (A1) Powered by ARM-based AWS Graviton Processors, which promise cost savings up to 45 percent for certain workloads. Built around ARM cores and making extensive use of custom-built silicon, the A1 instances are optimized for performance and cost. They are a great fit for scale-out workloads where you can share the load across a group of smaller instances. This includes containerized microservices, web servers, development environments, and caching fleets.