Enterprise Architecture Consulting

Between business strategy and IT landscape, enterprise architecture decides whether your investments compound — or work against each other. As an enterprise architecture consultancy based in Germany, we translate your strategy into a target state that holds: from an honest baseline analysis through the target architecture to a roadmap your board understands and your team can execute. Unlike the thin capability pages of the large firms, we deliver evidence and depth instead of buzzwords — and the senior architect at the table rather than the consulting pyramid behind it.

Enterprise architecture consulting in Germany and across Europe

Portamus GmbH is headquartered in Oberhausen in the Rhine-Ruhr region and works with clients throughout Germany, Austria and Switzerland — on site where workshops need a room, remotely where they don’t. That local footprint matters more than it sounds: architecture decisions in German organisations run into works council involvement, public-sector procurement rules, GDPR and BSI IT-Grundschutz, and the realities of a German ERP and integration landscape. We know that context because we work in it, and we deliver in German or English as your organisation requires.

Enterprise architecture consulting that enables your people

The difference is rarely the framework — plenty of firms know TOGAF® and ArchiMate®. It lies in who delivers and what remains afterwards. At Portamus the senior architect sits at the table personally, from the first workshop to the governance handover — not a junior team under occasional partner supervision. And we leave behind more than artefacts gathering dust on a shelf: governance champions inside your team who carry your enterprise architecture forward once the engagement ends. That is our people-first commitment: architecture that makes your organisation capable, not dependent.

From baseline analysis to a working EA function

Our consulting covers the full EA cycle and interlocks with our specialised services. We typically start with an enterprise architecture assessment, which makes gaps, risks and quick wins transparent within a few weeks. That is followed by enterprise architecture design of the target architecture across all four layers — business, application, data and technology. Where you want to establish a permanent EA function, we support the build-out of your EA programme. Methodologically everything stays grounded in TOGAF® and ArchiMate® — pragmatically tailored to your maturity, never dogmatic.

Proven in practice and measurable

Enterprise architecture consulting is not an end in itself: it pays into concrete business goals — consolidated application landscapes, viable ERP and cloud migrations, dependable compliance and lower run costs. Instead of generic reference logos, our case studies show how those outcomes show up in the numbers. Sector-specific requirements — in banking and finance, public administration or manufacturing — we bring from many engagements, not from a slide deck.

Three steps to a target architecture that holds

Not sure yet where to start? That is the normal case — and the best starting point. This is how we work forward together, without risk:

1. Initial assessment. In a no-obligation conversation with a senior architect we clarify your starting position, your goals and the biggest lever — and you receive a clearly bounded assessment proposal with effort and scope.
2. Target architecture and roadmap. We assess your current landscape, design the target state across all four layers, and derive a prioritised roadmap with quick wins and measurable milestones.
3. Delivery and EA governance. We support implementation and anchor standards, operating model and governance champions in your team — so the EA function stays when we leave.