UPDATE ......From Tuesday 8 April 2025 we will change the way that Single Sign-on will work on our Confluence (wiki.geant.org) Please see here for more information:
Update
https://www.etsi.org/
https://www.itu.int/
https://www.iso.org/
https://www.nist.gov/
https://www.mef.net/
https://www.tmforum.org/
https://www.opennetworking.org/