| Subject | English | Welsh |
| comp., MS | active mailbox migration | mudo blwch post gweithredol (The stage during the e-mail migration when the migration service is actively provisioning new cloud-based mailboxes) |
| comp., MS | content migration package | pecyn mudo cynnwys (A package of XML-formatted files that is used to migrate content between site collections, sites, and lists) |
| comp., MS | cutover migration | mudo ar gyfer y cyfnod pontio (" An e-mail migration process that provisions new cloud-based mailboxes and then migrates mailbox data to the cloud from a non-premises Exchange server. "Cutover" refers to the fact that all on-premises mailboxes are migrated in preparation for moving the entire e-mail organization to the cloud, instead of leaving a subset of mailboxes on-premises. ") |
| comp., MS | Email Migration | Mudo Negeseuon E-bost (The name of an Outlook Live feature in the Web management interface that enables migration of the contents of user mailboxes from an on-premises IMAP messaging system to Outlook Live (or Exchange Online)) |
| comp., MS | Mail Migration add-on | Ychwanegyn Mail Migration (A tool that allows users to upload email messages, email folders, and contacts from an email account on their PC to the cloud to facilitate access from multiple devices) |
| comp., MS | migration batch | swp mudo (A collection of user accounts that are being submitted in a CSV file for migration from an on-premises messaging system to an e-mail system in the cloud) |
| comp., MS | migration batch request | cais swp mudo (The action of submitting a migration batch for migration from an on-premises messaging system to an e-mail system in the cloud) |
| comp., MS | staged migration | mudo wedi'i lwyfannu (A type of e-mail migration that migrates a subset of on-premises mailboxes to the cloud. This type of migration allows the admin to maintain coexistence between their on-premises and cloud-based e-mail organizations) |