You can now launch R4 instances, the next generation of Amazon EC2 Memory Optimized instances, featuring a larger instance size, a new Intel Broadwell processor, improved networking and EBS performance, and cheaper on per GiB of RAM compared to R3 instances. R4 instances are well-suited for memory-intensive, latency-sensitive workloads like Business Intelligence (BI), data mining & analysis, in-memory databases, distributed web scale in-memory caching, and applications performing real-time processing of unstructured big data.