The software identification and software entitlement standards are developed under the ISO/IEC framework.
The process for developing ISO/IEC standards is quite complex. David Bicket, convenor of working group 21 (WG21) which was responsible for the creation of the software identification tag standard, explains the process.
Information on this ISO/IEC 19770-2 standard can be found here.
The software entitlement tag standard, ISO/IEC 19770-3, was released in 2016. For more information, click here.