| Subject | English | Welsh |
| comp., MS | certification authority | awdurdod tystysgrifo (An entity entrusted to issue certificates that assert that the recipient individual, computer, or organization requesting the certificate fulfills the conditions of an established policy) |
| comp., MS | certification status | statws ardystio (The stage of an app in the certification process) |
| comp., MS | intermediate certification authority | awdurdod ardystio canolradd (A certification authority that has the ability to issue the intermediate certificates needed to certify the subject identified by the end certificate) |
| comp., MS | issuing certification authority | awdurdod ardystio cyflwyno (In a public key infrastructure hierarchy, the certification authority that that issues certificates to users and computers) |
| comp., MS | trusted root certification authority | gwreiddyn awdurdod ardystio diogel (A root certification authority that appears in the Trusted Root Certification Authorities console of the Windows operating systems and is trusted by the operating system) |
| comp., MS | Windows Certification Program | Rhaglen Ardystio Windows (A certification program to ensure that devices, systems, and apps are compatible, reliable, and can perform to meet Windows standards) |
| comp., MS | Windows Desktop Apps Certification Kit | Cyfarpar Ardystio Rhaglenni Bwrdd Gwaith Windows (Tools and documentation to certify apps for Windows) |
| comp., MS | Windows Desktop Apps Certification Kit | Cyfarpar Ardystio Caledwedd Windows (Tools and documentation to certify apps for Windows) |
| comp., MS | Windows Hardware Certification Kit | Cyfarpar Ardystio Caledwedd Windows (The test automation framework used to certify devices or systems for Windows) |