Build vs Buy: When Custom Software Actually Makes Sense
This decision gets made on instinct more than it should. Off-the-shelf software has gotten genuinely good, which makes the cases where custom is actually justified more specific than they used to be.
Buy, when your process is standard
If your workflow is genuinely similar to how most businesses in your category operate, invoicing, basic CRM, project tracking, an existing SaaS product has already solved this, usually better and cheaper than a custom build would, because its cost is amortized across thousands of customers.
Build, when your process is the actual differentiator
If the specific way you operate is part of your competitive advantage, and you're forcing that process to bend around generic software's assumptions, that's a real signal. Off-the-shelf tools are built for the average case; if your business isn't the average case, the gap compounds over time.
Build, when you need to own the data model
If your business plans to build additional products or automation on top of this system later, owning the underlying data model matters. A third-party SaaS product's API and data structure are theirs to change, not yours to control.
Buy, when speed to launch matters more than fit
An imperfect off-the-shelf tool you can start using this week often beats a perfectly-fitted custom system that takes three months to build, especially early on when you're still validating whether the process itself is right.
The hybrid path many businesses miss
Buy for the parts of your operation that are genuinely standard, and build custom specifically for the parts that are your actual differentiation, connected via integrations. This avoids both extremes: paying to reinvent commodity software, and forcing your differentiated process into a tool that wasn't built for it.
How to actually decide for your situation
Map out which parts of your workflow are truly standard versus genuinely unique to how you operate, then apply build-vs-buy separately to each part rather than treating it as one decision for the whole business. This is usually the first real conversation in any MVP Sprint engagement here.