LEARN. PRACTICE. GROW.Concept and mechanism
Migration needs a service model rather than just a machine list. Identify jobs, files, certificates, databases, owners, and external dependencies. Use that map to build waves preserving business sequences. A monthly job might not appear in two days of observation. Compare complete current and target costs, including coexistence and decommissioning. Cost per useful outcome helps interpret growth: if spending rises 20% and volume rises 50%, unit cost becomes 80% of its previous value, with other conditions unchanged. This does not mean the total bill fell. An alerts-only budget without automation notifies but does not itself enforce a cap. Other mechanisms need specific evaluation.
Guided application
In a fictional steering meeting, present risk, impact, options, and the required decision. Removing a zone to save money changes the resilience commitment; it requires an alternative preserving the objective or explicit acceptance of the change. RUN should demonstrate access, diagnosis, recovery, and contacts before assuming the service. Slides and a mailbox do not prove capability. After recurring incidents, preserve the timeline and configuration differences, investigate the mechanism, and track actions with effectiveness evidence. Before closing legacy systems, confirm the relevant operational cycle, data, retention, recovery, and termination of licenses and agreements. Project closure then corresponds to an observable responsibility transfer and costs actually addressed.
Testing VM login does not validate the CFT → scheduler → batch → reconciliation sequence.
Common pitfalls
Inventory as dependencies; transferred cost as eliminated cost; administrative closure as autonomy.
Related topics: Requirements, costs, and platform selection · Data, resilience, and events · Networking, provisioning, and capacity
Plan and accept the complete service, including operations and legacy retirement.
Reference: Migration planning · Current linked standard guide; edition date unconfirmed (2026-09-30 inspection)