Enterprise Architecture in the Cloud

LeanIX is the single source of truth for IT Leaders across the business application ecosystem. It is a SaaS based, easy to use Enterprise Architecture tool that can be rapidly deployed across an organisation.

Rated #1 in customer satisfaction by Gartner, LeanIX provides instant value through access to real-time data.

An EA Tool for the Whole Business

LeanIX is an easy to use, intuitive and modern SaaS-based Enterprise Architecture Tool. It integrates with other business systems and creates transparent overviews of IT application landscapes to support strategic decision making.

Instant and Rapid Deployment

LeanIX provides value quickly through actionable insights within a matter of weeks. No installation is required, and LeanIX customers get the fastest time-to-value in the EA Tool market.


Get up-to-date overviews of your IT environment by leveraging
the following native integrations with LeanIX.

Driving Value and Cost Efficiencies

Streamlining of the existing application portfolio with an explicit goal of improving efficiency, reducing complexity, and lowering total cost of ownership through a myriad of processes.

Strategic Decision Support for EA Teams

As a leading LeanIX Partner within the APAC Region, The Citadel Group provides ongoing managed services and support as part of the LeanIX implementation. This includes on-boarding services to Business Leaders and their teams.

SAP S/4HANA Migrations

LeanIX helps you successfully migrate your legacy ERP systems to SAP S/4HANA through capturing the current landscape, defining the target architecture, and planning the transformation roadmap.

Business Capability Management

Enterprise Architects use Business Capabilities to illustrate the over-arching needs of the business in order to better strategise IT solutions that meet business needs.

Our Services and Support

Our strategic services advise and support business leaders and their teams in the development and implementation of a reliable and scalable architecture practice in only 8 weeks.

  • Strategic advisory and enterprise architecture services
  • Business capability modelling
  • Architecture Board facilitation
  • Ongoing architecture landscape maintenance
  • Establishment of an application and technology landscape
  • Application rationalisation planning

What Our Customers Say...

“Our Department selected LeanIX to support our Enterprise Architecture portfolio and increase EA adoption across our organisation. The Citadel Group delivered the jumpstart-onboarding project which was conducted over 4-weeks and involved consolidating our key Enterprise Architecture data sources that enabled us to produce reports such as Applications Heat Maps, Matrix, Metrics and Roadmaps. This project enabled us to rapidly establish the foundation for our current EA use cases and plan for future EA use cases.”

Department of Natural Resources, Mines and Energy

"We chose LeanIX to support the IT Strategy Office’s Enterprise Architecture Management at NTT Corporation. LeanIX has enabled us to quickly establish an Enterprise Architecture foundation and has assisted in increasing EA adoption across the organisation. Using LeanIX, we are able to produce useful and valuable reports that support our IT Strategy Office"

Project Manager, NTT Corporation

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