For organizations considering a move to CiviCRM, an important question involves migrating existing data. Most organizations are not coming to CiviCRM with a blank slate and an idealized list of requirements, but instead already have a wealth of valuable contact data stored in one or more legacy systems, and existing workflows built around those systems. In this session we'll look at two recent projects migrating several years' worth of existing contact data into CiviCRM from proprietary fee-licensed CRM systems, including an overview of the entire migration process and an examination of important steps along the way. Plot spoiler: everybody wins in the end. Slides with notes here: https://www.slideshare.net/TwoMice/migrating-to-civicrm-notes