Amazon Web Services (AWS) announces the availability of Amazon EC2 M5n, M5dn, R5n, and R5dn instances that can utilize up to 100 Gbps of network bandwidth, and Elastic Fabric Adapter (EFA) for HPC/ML workloads. These instances offer significantly higher network performance across all instance sizes, ranging from 25 Gbps of network bandwidth on smaller instance sizes to 100 Gbps of network bandwidth on the largest instance size, and support automatic encryption of in-transit traffic between instances. These new instances are designed for workloads such as databases, High Performance Computing, analytics, Big Data, and in-memory cache that can take advantage of improved network bandwidth and packet rate performance.