The verdict in three sentences
When ERP and CRM don't talk, teams re-key accounts, orders and stock — and errors spread. In 2026 an automated flow cuts entry errors by 90% and ships in 3 to 8 weeks. The key trade-off: iPaaS by subscription (fast, but recurring cost scaling with volume) or custom connector (EUR 5,000-25,000, no subscription) — the 3-year TCO decides.
iPaaS or custom connector
iPaaS excels at quickly connecting standard tools with simple scenarios. Custom wins when mapping logic is rich, volumes are high, or when you want to avoid a cost that climbs with the number of operations.
| Criterion | iPaaS (Make/Workato) | Custom connector |
|---|---|---|
| Setup cost 2026 | EUR 2,000-8,000 | EUR 5,000-25,000 |
| Recurring cost | EUR 40-800/mo (by volume) | Hosting only (EUR 20-150/mo) |
| Lead time | 2-5 weeks | 3-8 weeks |
| Complex mapping logic | Limited | Unlimited |
| Error handling and replays | Basic to medium | Fine-grained, bespoke |
| Platform lock-in | High | Low |
The 3-year TCO, the real arbiter
Short term, iPaaS looks cheaper; over 3 years, volume-based subscription can exceed a custom connector. Here is an order of magnitude for a mid-volume flow.
| Item (3 years) | iPaaS | Custom |
|---|---|---|
| Setup | EUR 5,000 | EUR 16,000 |
| Subscription/hosting | EUR 18,000 (EUR 500/mo) | EUR 3,600 (EUR 100/mo) |
| Maintenance/evolutions | EUR 4,000 | EUR 6,000 |
| 3-year total (order of magnitude) | EUR 27,000 | EUR 25,600 |
| Break-even | — | from ~20 months at high volume |
Mini case study
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Nadia, IT director of a 75-person B2B trading SME in Bordeaux, runs 8% entry errors between ERP and CRM, generating disputes and credit notes worth about EUR 45,000/yr. A custom connector at EUR 17,000 (6-week lead time) syncs accounts, orders and stock with replay handling. Errors drop below 1%, saving about EUR 38,000/yr in disputes and correction time. Payback in 6 months, with a 3-year TCO below iPaaS given the volume.
FAQ
iPaaS or custom, how to choose? iPaaS to start fast with standard flows and moderate volumes; custom as soon as logic gets complex or volume makes the subscription costly over 3 years.
How much does an ERP-CRM connector cost in 2026? From EUR 2,000-8,000 for an iPaaS scenario to EUR 5,000-25,000 for a custom connector, by number of synced objects and mapping complexity.
How are sync errors handled? Via a queue, automatic replays and alerts: failed records are isolated then replayed without blocking the overall flow.
How many errors can really be avoided? On manual re-keying, an 80-90% error reduction is common, with direct impact on disputes and credit notes.
How long to implement? Budget 2-5 weeks with iPaaS and 3-8 weeks custom, depending on data cleanliness and object count.
Let's scope your project. Tell us your systems (ERP, CRM), objects to sync and monthly volume, and we'll price iPaaS or custom with a 3-year TCO, indicative budget EUR 5,000-25,000. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
