CTL-018 · Change and release
Production and sandbox estates stay separate
The sandbox holds no production data and the live estate accepts no change that was not rehearsed.
What counts as evidence for this control
Written before the test, so a tester cannot choose the evidence that suits the result
Environment register and the promotion log for the period.
Test history
3 tests on record
| Test | Period | Sample method | Size | Pass | Fail | Result | Tester | Tested |
|---|---|---|---|---|---|---|---|---|
| CT-018-01 | Q3 month 2 2026 | random attribute sample | 47 | 45 | 2 | Pass with findings | Platform Engineering Lead (own team) Owner organization — not independent | Aug 07, 2026 |
| CT-018-02 | Q3 month 1 2026 | random attribute sample | 47 | 46 | 1 | Pass with findings | Platform Engineering Lead (own team) Owner organization — not independent | Jul 07, 2026 |
| CT-018-03 | Q2 2026 | random attribute sample | 23 | 23 | 0 | Pass | Platform Engineering Lead (own team) Owner organization — not independent | Jun 06, 2026 |
CT-018-01 · findings
Q3 month 2 2026 · random attribute sample
2 items failed the attribute test. Detail carried into the exception register.
CT-018-02 · findings
Q3 month 1 2026 · random attribute sample
1 item failed the attribute test. Detail carried into the exception register.
CT-018-03 · findings
Q2 2026 · random attribute sample
No exceptions in the sample. Evidence attached for every item tested.
Exceptions raised against this control
1 still open of 1
The sandbox carries a reduced estate, so a change rehearsed there does not prove the change is safe in the live estate at full volume.
What this page is, and what it is not
Read this before quoting a result
The test results on this page are a modeled test history for a modeled estate. They demonstrate the shape of independent control testing — a named tester outside the operating team, a stated sample method, a sample size, a pass and fail count, and evidence citations that resolve into the chain — not the audited results of a live enterprise.
12 of 12 evidence citations on this control resolve to a record in the evidence spine. Every citation resolves; each one links through to the sealed record it refers to.
A control shown as untested has no result at all. Coverage on this platform counts controls that were actually tested; it never counts a control as passing because it was designed.