Choosing between hiring a SaaS and building custom software is more like choosing between renting and buying a house than comparing two products. Renting is easier upfront, more flexible, and doesn't require maintenance. Buying gives more control, you can modify it, and long-term it can be cheaper. The right answer depends on how long you plan to stay and how much you need things to be exactly how you want them.
SaaS makes sense when the process you want to cover is standard and isn't part of your competitive advantage. Invoicing, payroll, expense management: these are processes all companies handle the same way, and a good SaaS handles them well. The problem is when what you want to automate is specific to your operation: your way of taking orders, your way of following up with customers, your way of managing a project. There, the generic SaaS starts to fall short.
The cost of a SaaS isn't just the monthly subscription. It's the time the team spends adapting how they work to the software, instead of the software adapting to them. It's the cost of integrations needed to connect the SaaS with other systems they use. It's the cost of exporting your data if you decide to switch providers in two years.
Custom software doesn't mean six months of development and a million-dollar budget. With the right team, a well-scoped system can be in production in weeks. The key is knowing exactly what you want before you start: companies that get lost in this process almost always do so because the scope changes along the way.
A practical rule: if the process you want to solve is the same as what a hundred companies just like yours have, look for a SaaS. If there's something specific about how your business operates that no SaaS represents well, consider building it. Not to differentiate yourself through technology, but because your processes are your way of doing things.
