Amazon Neptune now supports the T3.medium instance type

You can now launch the T3 instance type with Amazon Neptune for development and test scenarios. Amazon T3 instances are the next generation burstable general-purpose instance type that provide a baseline level of CPU performance with the ability to burst CPU usage at any time for as long as required. T3 instances offer a balance of compute, memory, and network resources and are ideal for database workloads with moderate CPU usage that experience temporary spikes in use.