As utility operations mature and support a broad range of services, workflows, and user base, it becomes necessary to scale up the environments. Similarly, old applications may retire, operations may get consolidated, and the systems used for processing may move into a lower tier to support QA and reporting, all of which may require downscaling of those environments. This section covers the considerations for infrastructure updates and data or system migration aspects. Specific tasks may vary based on the environments, but it helps to follow the general guidance provided in this section.