What actually drives Oracle EBS → S/4HANA migration complexity
Not every migration is equally hard, and the difference is measurable before you start — from which modules are in scope and how much data moves, not from a generic readiness questionnaire.
The two inputs that matter most
Our live assessment tool scores complexity on a 1–10 scale from two concrete inputs: which EBS modules are in scope — FI, AP, AR, GL, FA, Inventory, and Purchasing carry very different migration risk — and data volume, from under 10GB up to over 1TB. A single-module FI migration under 10GB and a seven-module footprint over 1TB are not the same project, and shouldn't get the same timeline estimate from a template.
Why the reasoning has to be shown, not just the number
A complexity score with no explanation is a guess wearing a number. Our tool requires the reasoning behind every score to reference the specific modules and data volume that produced it — so a CIO reviewing the output can check whether the assessment actually engaged with their environment, rather than returning the same generic “6 out of 10, moderate complexity” regardless of input.
What this changes about scoping a real migration
Treating Purchasing and Inventory modules as higher-risk than GL in isolation, and cross-referencing that against actual data volume, produces a timeline range and a top-risks list that's specific enough to argue with — which is the point. A readiness assessment that can't be disagreed with on specifics isn't doing its job.
See it built, not just described
Oracle EBS → S/4HANA migration assessment is the engagement this pattern comes from.
Oracle EBS → S/4HANA migration assessment →