Custom software and SaaS development: when off-the-shelf stops working
At some point a business runs on a process no product sells. Custom software is how that process becomes a system — and SaaS is how it becomes a product. What a custom development engagement includes and how to keep it from going wrong.
Most companies run on a mix of a standard ERP, a few SaaS tools and a growing pile of spreadsheets that hold the parts no product covers. Custom software is the decision to build those parts properly: a portal for your dealers, a planning tool for your production, a platform that turns your expertise into a service other companies pay for. The reason it has a bad reputation is not that it is hard — it is that it is usually started without a scope, a budget ceiling or an owner.
What custom development includes
- Discovery and specification — the users, the flows, the rules and the integrations, written down and prioritised into a first release that can actually ship.
- Architecture — the data model, the services, the APIs, the security model and the infrastructure, chosen for the next five years rather than the next demo.
- Delivery in increments — working software every two weeks on a staging environment, tested by your people, with scope adjusted on evidence.
- Integrations — the ERP, the bank, the payment provider, the identity provider, the partners’ systems.
- Quality and security — automated tests, code review, penetration testing before launch, audit trails where the business needs them.
- Operations — hosting, monitoring, backups, incident response and a maintenance plan with a known monthly cost.
SaaS specifically
Turning a system into a product other companies subscribe to adds multi-tenancy, self-service onboarding, billing, plans and limits, status pages and a support process. We have built and run such platforms; the early decisions — tenancy model, data isolation, billing — are the ones that are expensive to change later, so they are made deliberately.
How to keep it from going wrong
A fixed-price first release with a clear scope; a product owner on your side who can decide; demos every two weeks; and an honest conversation whenever the evidence says the plan should change. Ownership of the code transfers to you on payment, with documentation, so you are never locked in.
What to prepare
- The process as it runs today, including the spreadsheets.
- Who the users are and what each needs to do.
- Systems the software must connect to.
- Constraints: compliance, hosting, deadlines, budget range.
See the custom software and SaaS development page.