ERP vs. Custom Business Software: How to Choose
American Designs Agency Team
When spreadsheets stop scaling, businesses face a choice: adopt a packaged ERP, extend an open-source platform like Odoo or ERPNext, or build custom software. Each path can be right — for different situations.
Packaged ERP
Best when your processes are fairly standard and you're willing to adapt to the software's way of working. Expect licensing costs, implementation partners and some compromises.
Open-source ERP, customised
A strong middle ground. You start with proven modules for accounting, inventory and sales, then customise the parts that make your business different. Lower licensing costs, more flexibility.
Fully custom
Makes sense when your workflows are genuinely unique, when user experience matters for adoption, or when you need deep integration with other systems you own. Higher upfront investment, but software that fits exactly.
Questions to ask before deciding
- Which processes give us a competitive advantage, and which are standard?
- How many users and locations will use the system in three years?
- What systems must it integrate with?
- Do we have the internal capacity to manage change and training?
