Editing Change control (section)

===Build / test===
If the change control request is approved to move forward, the delivery team will execute the solution through a small-scale development process in test or development environments. This allows the delivery team an opportunity to design and make incremental changes, with [[Unit testing|unit]] and/or [[regression testing]].<ref name="HallManaging07" /><ref name="Matteson10Essen17" /><ref name="TaylorProject08" /> Little in the way of testing and validation may occur for low-risk changes, though major changes will require significant testing before implementation.<ref name="TaylorProject08" /> They will then seek approval and request a time and date to carry out the implementation phase. In rare cases where the solution can't be tested, special consideration should be made towards the change/implementation window.<ref name="Matteson10Essen17" />