The RAIN Alliance is a consortium of companies that together want to create a smarter and more sustainable world by using RAIN technology to connect trillions of everyday items across their entire lifecycle, simply and inexpensively. The RAIN Alliance drives awareness and fosters market adoption of RAIN technology and supports the development of the RAIN brand. RAIN uses the GS1 UHF Gen2 protocol which ISO/IEC has standardized as 18000-63.