A Module-by-Module Approach to ERP Rollouts

Vendor lock-in rarely arrives as a single decision; it accumulates gradually through small, individually reasonable choices that collectively make switching platforms prohibitively expensive later. Vendor lock-in usually creeps in gradually, through proprietary data formats, custom scripting languages, and integrations that only work with one vendor's ecosystem.

Insisting on standard data export formats, documenting all customizations independently of the vendor, and favouring open APIs over proprietary connectors all keep your options open later.

We build this portability thinking into ERP selection projects from day one, even when a client has no immediate plan to switch vendors.

Data format is the single biggest factor in how painful a future migration would be. An ERP that stores your data in standard, well-documented formats, and that supports exporting the full dataset without needing the vendor's cooperation, keeps a real exit option open. Systems that use proprietary binary formats or that require a paid export module effectively hold your own data hostage.

Custom scripting languages specific to one ERP platform are another quiet source of lock-in: every workflow rule or report written in a vendor-specific language becomes throwaway work in a migration, whereas logic built using standard SQL, REST APIs, or widely used languages transfers far more easily to a new system.

We also recommend keeping a living document of every integration and customization independent of the vendor's own documentation tools, since vendor-hosted documentation typically disappears or becomes inaccessible the moment a contract ends, right when you need it most for a migration.

Even for clients who have no plan to ever switch ERP vendors, we still push for this portability discipline, because it also protects against a much more common scenario: a vendor being acquired, discontinuing a product line, or significantly raising prices, none of which require you to want to leave for lock-in to suddenly become an expensive problem.