Standard modernization vendors propose a 9 month rebuild: discovery deck in months 1 to 4, architecture in months 4 to 6, implementation in months 6 to 9. By month six, the business has shifted enough that the original spec no longer fits. The legacy stack runs in parallel, costs double, and trust in the program erodes. Industry data backs this: most full data platform migrations cost $300K to $3M and 70 to 80% of legacy IT budget gets consumed by maintenance, and then the rewrite often fails to retire the legacy system anyway.
Our data platform modernization services typically deliver value in 4–8 weeks per slice, not the 9–18 months most enterprises see from "lift and shift" rewrites. The reason is one architectural decision: we modernize around the workflow that is already blocking delivery, not the technical layer that is most visible on the architecture diagram.
Hire Van Data Team to modernize your legacy data platform in 8 to 16 weeks, without freezing delivery, breaking existing reporting, or signing up for a multi quarter rewrite.