Migration of operational computing hardware to a data center

Migration techniques are described. In an example, a computing system sends instructions associated with operational computing hardware to a client device. The instructions are sent based on a client request for relocating the operational computing hardware from a client location. This hardware is configured to provide client compute operations and store client data. The computing system provisions a private network within a data center of a provider. Based on an arrival of the portable enclosure with the operational computing hardware from the client location to a provider location associated with the data center, the computing system establishes a network connection between the private network and the operational computing hardware stored in the portable enclosure. The computing system provides remote access to the operational computing hardware via the private network based at least in part on the network connection.