FPGA (Field Programmable Logic Gate Array) AMIs are built on CentOS Linux images provided, supported, and maintained by Amazon Web Services. AMIs are pre-built using the FPGA development and running tools necessary to develop and customize FPGAs for hardware acceleration. The FPGA Developer AMI and FPGA Developer Developer Kit (https://github.com/aws/aws-fpga) together form a development environment, which includes Scripts and tools to simulate FPGA designs, compile code, build, and register AFI (Amazon FPGA Images). Developers can deploy FPGA developer AMIs on Amazon EC2 instances and quickly provision the resources they need to write and debug FPGA designs in the cloud. AMIs are designed to provide a stable, secure, and high-performance development environment. FPGA AMIs are provided free of charge to Amazon EC2 users.