Build or buy
Should you buy software or build it?
Direct answer
Buy software when the workflow is common and a product already does it without a daily workaround. Build when the firm is spending real staff time forcing a product to hold a record that does not fit, and will still care about that workflow next year. Many teams need neither extreme: keep the product, and build the thin layer around the gap.
Start from the workaround, not from a preference
The expensive habit is not the subscription. It is the hour a person spends every day copying, reconciling, or explaining a status the tool cannot show. If that hour does not exist, a custom build is a way to spend money on a preference. If that hour exists on several desks, the subscription is no longer the full cost of the tool.
Write the workaround down before you talk to anyone who sells either option. What is retyped, what is asked twice, and which list is no longer trusted. That note is the brief.
When buying is the better decision
Accounting, email, a standard pipeline, a point of sale that matches how the counter works, a learning platform the faculty will actually teach on: these are crowded markets because the job is shared by thousands of firms. Configuring a good product is faster than rebuilding it, and someone else maintains the boring parts.
Buy, too, when the process itself is about to change. Custom software freezes a workflow into screens. If the firm does not yet know the workflow, a product you can abandon is a cheaper way to learn.
When building earns it
Build when the record is specific to how the firm works: a drawing revision and who received it, a matter's missing documents, an engagement that is really three entities and a period, a clinic day that includes walk-ins the diary product cannot hold. The test is whether every product in the category would make the team keep a shadow spreadsheet.
The build should still be the smallest record that removes the shadow system. A custom replica of a product you rejected is the most expensive way to lose.
The middle path is the common one
Keep the tax portal, the POS, the practice system or the CRM. Build the checklist, the register or the hand-off those tools do not have. Connect them where they offer an interface worth using. This is less impressive in a sales deck and more useful on a Tuesday.
Sunbeam's comparison of custom software and SaaS puts the same choice in a side-by-side form. The industry pages show what the surrounding layer tends to look like in a specific kind of firm.