A ready-made platform can cover most of a requirements list and still be expensive to introduce. The difficult part may sit between systems: mapping customer records, preserving permissions, or recovering a failed import. Evaluate that work before comparing a subscription price with a development estimate.
Choose a workflow with an awkward edge
Suppose a service company is evaluating scheduling software. Test a representative booking from customer creation through assignment, rescheduling, cancellation, and reporting. Include a duplicate customer and a temporary integration failure. A successful happy-path demonstration leaves these questions unanswered.
Ask the people who will operate the process to participate. An administrator may spot missing permissions or an unusable exception queue that a feature checklist overlooks. Write down each manual workaround and who would perform it.
Compare complete operating models
For a purchased system, include migration, integration maintenance, training, support, and eventual exit. For custom software, include monitoring, updates, documentation, and long-term ownership. Government Digital Service guidance on technology selection similarly calls attention to ongoing costs, support, interoperability, and transition costs.
Open-source components also need owners. Availability of source code does not guarantee that your team can maintain a fork or respond to a production issue. Check the practical support arrangement alongside the functional fit.
Require an exit demonstration
Export a representative dataset and inspect whether relationships, attachments, and history survive in a usable form. Check how another system would receive updates during a transition. Record unresolved constraints in the decision, with a review trigger such as a major pricing change or a new workflow requirement. Choose the option that fits the operating model you can sustain, including a hybrid approach when the boundary is clear.
