Verify an exit before you depend on a service

Define what must remain usable

Source-code ownership is valuable. It is only one part of an exit plan.

Consider a fictional application whose source is in the company’s repository. The build downloads a private package from the supplier. Production uses a supplier-owned cloud account. Nobody has recorded the database restore procedure.

The company has the code but cannot yet operate the service independently. Its exit plan must cover rights, assets, access, and knowledge together.

Inventory the dependencies

Check export formats and scope. A readable document export does not necessarily preserve every relationship, attachment, or execution record. Request a sample and inspect it with the people who would use it.

Run an independent rebuild

Use a safe test environment and approved example data. Give an authorized engineer the proposed handover package. Ask them to build the application, apply configuration, restore the data, and verify one complete business operation.

Record each missing item and how long it takes to obtain. Avoid silently supplying undocumented knowledge during the exercise. The purpose is to find what the next team would lack.

Then examine transition constraints: overlapping subscriptions, data transfer time, package access, identity changes, and support availability. Include these costs in the build-versus-buy comparison.

Separate export from deletion

Export produces a copy. Transition changes who operates the service. Deletion removes specified records under the agreed process. These are separate decisions with different evidence.

Define the required retention and deletion scope with the relevant owners. Confirm the supplier’s current terms and procedures. Do not delete the only usable recovery copy before the receiving system has been verified.

Taiga documents an administrative export process and a separate erasure process. Secret values are excluded from the export. Your handover therefore needs an authorized way to recreate required secrets. Verify the current export contents against your transition needs; do not assume it is a complete application backup.

Decide which dependencies are acceptable

Portability does not require removing every managed service. A dependency can be a reasonable choice when its value, constraints, and transition path are understood.

Record the accepted dependencies, an owner, and a review trigger. Repeat the exit exercise after a material architecture or contract change. Continue with an adoption plan that includes these responsibilities from the start.