The methodology used for the heuristic evaluation of the CNCF-Landscape website is Nielsen and Molich's heuristics. The domains used are:
#1: Visibility of System Status
#2: Match between system and the real world
#3: User control and freedom
#4: Consistency and standards
#5: Error prevention
#6: Recognition rather than recall
#7: Flexibility and efficiency of use
#8: Aesthetic and minimalist design
#9: Accessibility
#10: Help and documentation
The following 0 to 4 rating scale can be used to rate the severity of usability problems:
0 - I don't agree that this is a usability problem at all
1 - Cosmetic problem only: need not be fixed unless extra time is available on project
2 - Minor usability problem: fixing this should be given low priority
3 - Major usability problem: important to fix, so should be given high priority
4 - Usability catastrophe: imperative to fix this before product can be released