Why does timing matter more than the tool?
A SOC 2 Type I report looks at the design of your controls at a point in time. A Type II report looks at whether those controls operated over a period of time. Your auditor needs evidence for every part of that period, whichever platform collected it.
That is why the date of the move matters more than the platform you move to. A switch that breaks the evidence trail in the middle of a period creates work for your auditor and risk for your report.
When is the best moment to switch?
- Just after a report is issued. The period is closed, the evidence is final, and the next period has not started.
- Before your first Type II period starts, if you only have a Type I so far.
- During a planned gap between periods, if your auditor agrees one.
What if you have to switch mid-period?
Sometimes the business cannot wait. In that case:
- Tell your auditor before you move and agree how evidence from both platforms will be presented.
- Export everything the old platform holds for the current period: evidence, test results, policy versions, approvals and access reviews.
- Run both platforms in parallel for a short overlap, so no control goes unmonitored on the changeover date.
- Keep a dated changeover note: what moved, when, and who checked it.
How long should you allow?
Allow for three stages: procurement, setup and parallel running. Each depends on your size, your integrations and how much the new vendor does for you, so ask each finalist for its own plan with dates, and hold it to that plan in the contract.
What about customer commitments?
If customers expect a renewed report by a given date, work backwards from that date. A late report can cost more in sales conversations than the platform switch saves. A bridge letter can cover a short gap between your last report period and today, but it is your statement, not your auditor's.
Who should own the timeline?
One person, usually whoever owns the audit relationship. They hold the dates for contract signature, setup, parallel running, changeover and the auditor briefing, and they check each one against the report period. When the timeline sits with one owner, a slipped setup date is noticed early rather than at fieldwork.