Do you go for custom or a ready-made package? There is no answer that is always right; it depends on your process, your budget and how unique your way of working is. This page puts the pros and cons side by side, honestly.
Off-the-shelf software is an existing package used by many organisations. You adapt your way of working to what the package can do. Custom turns that around: the software is built around your process. Both are legitimate choices; it is about what fits your situation best.
Points to consider: you are tied to what the package can do, you sometimes pay for features you do not use, and adapting it to your specific wish is not always possible.
Points to consider: custom asks for an investment up front and building takes time. Starting small and well-scoped helps keep that manageable. See what does custom software cost.
A useful rule of thumb: the more generic your process, the sooner an off-the-shelf package will do; the more your process sets you apart or the more you want to integrate, the sooner custom comes into view. Often a combination is possible too: an off-the-shelf package for the generic part, with custom or an integration for the part that is truly yours. An honest analysis up front prevents building too much or too little.
Want to know how custom works in practice? Read custom software development or see the steps of a development project.
Off-the-shelf is a ready-made package you adapt to; custom is built around your process.
Often when your process is generic, you want to start quickly and an existing package already covers most of it.
Often when standard packages do not fit, you want to keep a distinctive process or you want to connect systems. An analysis up front helps.
This page is general guidance and not binding advice. Which choice fits you is something we are happy to discuss together. Back to custom software.