CoachChange control is the procedure every production change follows — recorded, reviewed, approved by someone other than its author, deployed by a stated method, verified — so that the firm can say for any change who made it, who approved it and when.
| cadence | mean wait (days) | changes per deployment | bisection steps |
|---|---|---|---|
| each change at once | 0.00 | 1.00 | 0.00 |
| daily train | 0.51 | 1.83 | 1.16 |
| weekly train | 3.46 | 10.25 | 3.93 |
| fortnightly train | 6.99 | 20.50 | 4.86 |