The Eternal Question
Every growing company hits this crossroads: your team has outgrown the tools you're using, but custom software sounds expensive and risky. Meanwhile, there are hundreds of SaaS products promising to solve your exact problem.
How do you decide?
When to Buy Off-the-Shelf
Buy when the problem is generic. If thousands of other companies have the same need — email marketing, basic CRM, project management, accounting — a SaaS solution is almost always better. The development cost has been amortized across thousands of customers, and you get ongoing updates and support.
Good candidates for SaaS:
- Email marketing (Mailchimp, Brevo)
- Basic CRM (HubSpot, Pipedrive)
- Accounting (Xero, DATEV)
- Project management (Asana, Linear)
- Communication (Slack, Teams)
When to Build Custom
Build when your competitive advantage depends on it. If the software IS the product, or if your workflows are genuinely unique, custom development gives you control, flexibility, and differentiation.
Good candidates for custom software:
- Your core product or platform
- Industry-specific workflows no SaaS covers
- Integration layers connecting multiple systems
- Internal tools handling proprietary processes
- Data pipelines with custom business logic
The Decision Framework
Ask these 5 questions:
1. Does a SaaS solution cover 80%+ of our needs? If yes, buy it and customize the rest.
2. Is this workflow a competitive differentiator? If yes, build custom.
3. Will we need to modify this frequently? Custom is more flexible for rapid iteration.
4. What's our 3-year total cost? SaaS subscriptions add up. Custom has higher upfront cost but lower ongoing cost.
5. Do we have (or can we hire) the team to maintain it? Custom software needs ongoing maintenance.
Cost Comparison: A Real Example
Scenario: A logistics company needs a dispatch system.
| Factor | SaaS Solution | Custom Build |
|---|
| Year 1 cost | €18,000 (subscription) | €45,000 (development) |
|---|---|---|
| Year 2 cost | €18,000 | €6,000 (maintenance) |
| Year 3 cost | €18,000 | €6,000 |
| 3-Year total | €54,000 | €57,000 |
| 5-Year total | €90,000 | €69,000 |
| Customization | Limited | Unlimited |
| Data ownership | Vendor | You |
The breakeven point is typically 2.5-3 years. After that, custom is cheaper AND more flexible.
The Hybrid Approach
The smartest strategy is often hybrid: use SaaS for generic functions and build custom for your unique workflows. Then connect everything with API integrations.
At Digidog, we specialize in exactly this approach. We help you identify what to build, what to buy, and how to connect it all.
Let's map your tech stack together.