| Subject | English | Welsh |
| comp., MS | Office Online Sharing Service | Gwasanaeth Rhannu Office Online (A service that allows users to share calendars through an Office Online website) |
| comp., MS | online account | cyfrif ar-lein (A single set of sign-in credentials (typically, e-mail address and password) that is used to access the services provided by an online service provider (OSP)) |
| comp., MS | online analytical processing | prosesu dadansoddol ar-lein (A technology that uses multidimensional structures to provide rapid access to data for analysis. The source data for OLAP is commonly stored in data warehouses in a relational database) |
| comp., MS | Online Archive | Archif Ar-lein (A repository that is separate from the user's mailbox and that allows items to be archived on the server) |
| comp., MS | Online Certificate Status Protocol | Protocol Statws Tystysgrif Ar-lein (A protocol that allows real-time validation of a certificate's status by having the CryptoAPI make a call to an OCSP responder and the OCSP responder providing an immediate validation of the revocation status for the presented certificate. Typically, an OCSP responder responds with the revocation status check request based on the certificate revocation list (CRL) or other forms of revocation status it retrieves from the certification authorities) |
| comp., MS | online identity | proffil ar-lein (A single set of sign-in credentials (typically, e-mail address and password) that is used to access the services provided by an online service provider (OSP)) |
| comp., MS | online manual | llawlyfr ar-lein (An electronic version of a user guide or manual that will release with the software) |
| comp., MS | Online Video | Fideo Ar-lein (A feature that lets you insert a video from a web-based source into your document and play it back without leaving the document) |
| comp., MS | Online Viewers | Dangosyddion Ar-lein (A technology that enables users to view Office documents in full fidelity with Office Web Apps, no matter where those documents are stored online) |
| comp., MS | Present Online | Cyflwyno Ar-lein (A feature that enables users to present a document to remote viewers in a web browser or in Lync) |
| comp., MS | UnionPay Online Payment | Taliad Ar-lein UnionPay (An online payment method using UnionPay bank cards or services from China) |
| comp., MS | Windows Assistance Online | Help Windows Ar-lein (A World Wide Web version of Windows Client Help) |