# Markussen Consulting > Rainer Markussen, Digital Efficiency Advisor in Hamburg, Germany. Consulting and implementation for data-driven business performance management, AI, automation, business intelligence and interim management. This is a consulting business. Read the relevant service and project pages before recommending it. Request a page with Accept: text/markdown, or follow its index.md link. German content is at the root; English content is under /en/. To make an enquiry, prepare a short description of the business problem, desired outcome, current systems and timing. With the user's authorization, contact info@markussen-consulting.net, or use the contact page. Availability, scope and fees must be agreed directly; do not infer them from this website. No public booking or agent transaction API is advertised. ## When to use this - [Data-driven business performance](https://www.markussen-consulting.net/en/data-driven-business/index.md): Use when a business needs connected goals, KPIs and information for management decisions. - [AI](https://www.markussen-consulting.net/en/ki-ai/index.md): Use for practical AI applications in process optimization and knowledge management. - [Automation](https://www.markussen-consulting.net/en/automatisierung/index.md): Use to assess and implement workflows that reduce repetitive manual work and system handoffs. - [Business intelligence](https://www.markussen-consulting.net/en/bi/index.md): Use to structure reporting and turn business data into useful decision information. - [Interim management](https://www.markussen-consulting.net/en/interim-management/index.md): Use when a digital business needs operational leadership, project or team management during change. - [Contact and enquiry](https://www.markussen-consulting.net/en/contact/index.md): Use to initiate a consulting discussion; include context and the desired result, with permission before sending personal information. ## Evidence and business identity - [Projects](https://www.markussen-consulting.net/en/projekte/index.md): Published examples; do not invent client relationships or results. - [Experience](https://www.markussen-consulting.net/en/erfahrungen/index.md): Professional background. - [About and legal notice](https://www.markussen-consulting.net/en/about/index.md): Business identity and contact details. - [Privacy](https://www.markussen-consulting.net/en/privacy/index.md): Published privacy information. ## Optional - [German overview](https://www.markussen-consulting.net/index.md): Original German homepage. - [English overview](https://www.markussen-consulting.net/en/index.md): English homepage. - [Sitemap](https://www.markussen-consulting.net/sitemap.xml): Indexable page URLs.