Introducing EC2 Launch v2 to simplify customizing Windows instances
EC2Launch v2 is a redesigned, unified launch agent for EC2 Windows instances, which simplifies the configuration of Windows instances to meet the needs of your workloads. EC2Launch applies AWS-recommended configurations to your Windows instances, such as local administrator username changes, support for increased user data input length, and agent auto-updates. EC2Launch v2 provides you with a single EC2 launch experience regardless of EC2 platform and supported Windows OS.
Source:: Amazon AWS