The Buildkite Migration tool is an open source program that translates CircleCI workflow definitions into Buildkite pipeline definitions, making it easier for users to migrate from one CI/CD tool to another. Buildkite Pipelines is a hybrid CI/CD solution known for its focus on security and privacy of code and data. The migration tool covers many typical use cases but is still under active development, with improvements being made to the translation process and plans to translate orbs to Buildkite plugins.