Identify what is genuinely distinctive
Neither option wins in every situation. If the main process is common and a ready-made product supports it well, faster implementation can be valuable. Bespoke development becomes more relevant when particular rules, integrations or user journeys are central to the business and adapting an existing product would introduce excessive complexity.
Consider cost over the system’s lifetime
Comparing a purchase price with a development estimate is not enough. Data migration, training, integrations, later changes, licensing and support also matter. For a packaged product, examine customisation limits and data-export options. For bespoke software, consider documentation, continuity of development and ownership of maintenance responsibilities.
Test scenarios rather than feature lists
Choose several realistic, difficult scenarios and run them through the product or proposed prototype. An incomplete order, a correction, a change of responsibility or an unavailable integration often reveals more than a flawless demonstration. The exercise should make clear where the process would need to change and where software must adapt to the process.
Treat a combined approach as a serious option
Sometimes the strongest choice is a standard tool for common functions plus bespoke software for the business’s distinctive workflow. Clear data ownership and integration responsibilities are essential. A good decision can be explained: this part is bought, that part is built, and each has a defined maintenance path.