Can we keep running NAV after end-of-support?

Technically yes. Practically, it increases your security and compliance exposure, and support becomes more expensive and harder to find.

How much does migration cost?

It depends on data, user count, integrations, and customisations. A TCO comparison is the best way to evaluate it properly.

Will our NAV customisations work in Business Central?

Not directly, NAV customisations need to be rebuilt as extensions. The good news: many older customisations are no longer necessary because BC includes those capabilities out-of-the-box.

Can we do hybrid (cloud + on-prem)?

Yes, depending on your requirements. Many businesses still prefer cloud for simpler maintenance and automatic updates, but hybrid can make sense in specific cases.