MIGRATION PLANNING
An AWS migration readiness checklist for Thai businesses expanding across ASEAN
Turn an expansion plan into a workable migration scope, with clear dependencies, regional requirements, ownership and a first workload to test.
1. Define the business outcome and the decision owner
For a Thai SME or mid-sized business opening another ASEAN market, migration planning should begin with the work that expansion creates. A distributor might need reliable partner access; a retailer might need to handle campaign traffic. Write down the outcome, the affected application and how the business will judge success before selecting infrastructure.
AWS describes migration as assess, mobilize and migrate. Apply that structure at a scale your team can manage. A short readiness register can capture each open question, its owner, the evidence needed and the next decision. This becomes a working document for IT, finance and the business sponsor.
- Name one accountable sponsor and one application owner.
- Record the business deadline, busy periods and acceptable interruption.
- Separate launch requirements from improvements that can follow later.
2. Map what the application actually depends on
Start with a simple diagram covering the application, database, identity service and external connections. Check it against observed traffic and operational records. AWS recommends validating application knowledge with discovery data; an old diagram can miss the integration that makes an otherwise straightforward move difficult.
For your first candidate, trace one complete business transaction, such as placing an order and updating stock. Ask what runs overnight or at month end. Record uncertainty explicitly: an unknown dependency needs an investigation owner before it becomes a cutover surprise.
- List data stores, interfaces, batch jobs and software licences.
- Mark dependencies that need low latency or must move together.
- Capture normal demand, peaks and the source of each measurement.
3. Choose a Region from workload requirements
An ASEAN expansion plan does not by itself determine the right AWS Region. AWS identifies latency, cost, available services and compliance requirements as selection factors. Build a shortlist, then check that the services and features your design needs are available in each candidate Region.
Use the shortlist to organize a concrete comparison. Measure a representative user journey from the locations you will serve. Document where application data and backups would sit, and obtain the organization's approved data-handling requirements before committing to the design. Include cross-border integrations and support arrangements in that discussion.
- Test the full transaction from relevant customer and office networks.
- Record storage, backup and replication locations separately.
- Include connectivity and data movement in the operating-cost assumptions.
4. Check who will operate the workload after migration
Readiness includes the people who will receive the first alert. AWS's mobilize phase covers the foundational environment, security, operations and team capability. For a lean team, turn those areas into named responsibilities and short runbooks that a colleague can follow without relying on one person's memory.
Agree the recovery time objective, meaning how quickly service should return, and the recovery point objective, meaning how much recent data loss the business can tolerate, measured in time. Have the business owner confirm both. Use a restore rehearsal to check the proposed recovery process before treating the workload as ready.
- Identify owners for access, monitoring, patching, backup and billing.
- Confirm escalation contacts and coverage across operating hours.
- Record how recovery and business acceptance will be demonstrated.
5. Illustrative scenario: a distributor's first migration
Consider a fictional Thai distributor introducing a partner portal for another ASEAN market. Its initial plan moves the portal while retaining the stock system in its office. Discovery reveals frequent synchronous stock checks. The proposed split now needs a latency test and an agreed behaviour when connectivity fails.
The team makes this dependency a pilot question. It uses a representative test environment to exercise order entry, stock lookup and reconciliation with the application owner present. It also checks whether support staff can diagnose a failed lookup. These are proposed assessment steps, not a reported customer result.
- Define pass criteria for response time and transaction correctness.
- Assign ownership of the portal-to-stock-system connection.
- Review the target design if the dependency fails the agreed tests.
6. Finish with a decision your team can act on
Use the checklist to decide whether a specific workload is ready for a pilot, ready after named gaps are closed, or needs further assessment. AWS wave-planning guidance includes cutover preparation, rollback, testing and operational handover. Translate those into a small set of approval evidence for your first move.
Before expanding the scope, review what the pilot taught you about dependencies, support effort and cost assumptions. Retain the findings in the readiness register so the next application benefits from them. A useful assessment ends with a bounded next step and clear ownership.
- Approve the pilot scope, acceptance checks and rollback triggers.
- Assign an owner and review date to every remaining gap.
- Confirm the operational handover before approving the next workload.