The platforms were not the problem. It was the missing link between them.
Both platforms were already in use and both held valid information: SAP Signavio for business process modelling and SAP LeanIX for application and technology architecture, with the corporate collaboration hub as the front door where business teams read published models. What was missing was a mapping between them and a governance model that decided who maintains what, and when.
A governance model first
We defined a process governance model: governance roles, automated review cycles and approval structures, so every process model has an owner and a review path before it is trusted.
Then the technical integration
Modelling and technical integration mapped attributes, dictionaries and integration mechanisms between Signavio, the operational system landscape and the LeanIX repository, so a process and the applications supporting it resolve to the same objects.
Two platforms with no mapping are two opinions. Mapped and governed, they are one model.
Standardisation followed: harmonised process hierarchies, modelling conventions and governance structures, with dashboards monitoring process variants, compliance and collaboration-hub adoption across the process and application lifecycle.