No. We run every migration in stages, starting with a full test migration in a separate environment. Your team continues working in the old system until everything in Odoo is validated. The final migration is performed with careful planning and close monitoring to minimize or completely avoid downtime. This ensures a smooth technical transition without business disruption.

Unfortunately, it’s not possible to provide even a rough estimate before we analyze your systems and workflows. Clear pricing becomes possible only after the Discovery & Gap Analysis phase, in which we define the exact scope, data requirements, and migration strategy. This ensures that the estimate is accurate and reflects your real needs.

Migration cost depends heavily on factors such as the number and type of source systems, data complexity and quality, workflow alignment, necessary customizations, and the overall volume of information to be migrated. The range can vary significantly — from just a few thousand dollars for simple cases to hundreds of thousands for large, complex, multi-system migrations..

Absolutely. Many companies start with Excel or lightweight tools for managing customers, orders, or accounting. This is a very common scenario for which we take your spreadsheets and ad-hoc applications and transform them into a clean, structured Odoo database with proper models, relationships, and workflows — giving you a solid foundation to grow.

You will not lose your historical data. The migration process includes multi-step validation, test cycles, reconciliation reports, and strict integrity checks to ensure everything is transferred accurately and safely before going live.

But the real question is not only about safety — it’s also about necessity. Some historical data is essential and must be migrated for operational or legal reasons. Other data, however, may be outdated, unused, or irrelevant, and migrating it can unnecessarily increase effort and cost.

We help you distinguish between what must go into Odoo and what can be stored externally. For less critical historical records, we can set up reliable long-term storage with simple access. This archive can even be connected to Odoo through a bridge, so you can view or search old records without noticing whether they sit inside Odoo or a separate storage.

In short: Nothing is lost, and everything you need remains accessible — all without burdening your Odoo system.

It depends. Every migration is different, and precise timelines can only be defined after the Discovery & Analysis phase. The duration is influenced by data volume, data quality, the number of source systems, their complexity, and how closely your workflows match Odoo’s standards. Smaller or straightforward migrations can be completed relatively quickly, while more complex cases — especially involving multiple legacy systems or very large datasets — may take several months.

Once everything is ready, the actual process of going live can take from a few minutes to a few hours depending on the amount of data.

Your involvement is relied on primarily during the Analysis phase and during testing. We only need your team to explain current workflows, provide access to source systems, confirm priorities, and validate the migrated data. All technical work — extraction, mapping, migration, configuration, and development — is handled by VentorTech..

It depends where you’re at right now. Most businesses start seeing benefits very quickly after switching to Odoo: cleaner data, more structured workflows, reduced manual work, better visibility, and faster day-to-day operations. Full ROI depends on your scope; some companies see major improvements within weeks, while others reach full return after rolling out additional processes and automation.

If you’d like a clearer idea of what this can look like, you can review the case studies and testimonials above, and we can also connect you with existing clients who have gone through similar migrations, so you can hear directly about their experience and the results they achieved.

Yes (after all, our experienced developers remember the times when Odoo was OpenERP), but this falls under our Odoo Upgrade Service, not the migration service described here. If you need to upgrade from an older Odoo version, you can use the Odoo Upgrade Calculator on our Upgrade Services page to get an initial estimation.

Yes. When required, we extend the ETL workflow with additional steps such as data enrichment, advanced validation rules, data quality checks, transformation error handling, and detailed ETL logging and monitoring. All migration procedures follow strict GDPR and security standards.

We also automate the process as much as possible using scalable scripts capable of handling very large datasets. In some projects, full migrations run for over 48 hours across multiple parallel processes, followed by automated re-runs to synchronize any new or changed data. This ensures accuracy even when working with massive, constantly updated datasets.