Hauptleistungen

Hauptleistungen is a German term used in business and contract language to denote the principal services, deliverables or performances that form the core scope of a project or offering. They define what a supplier commits to provide to the customer and serve as the central basis for pricing, scheduling and acceptance.

In practice, Hauptleistungen are described in a Leistungsbeschreibung or Leistungsumfang. They typically include the main objectives, the concrete deliverables, milestones, interfaces, and the criteria for formal acceptance. Nebenleistungen (ancillary or additional services) may accompany them but are generally treated separately to prevent scope creep.

Examples by sector illustrate the concept. In information technology, Hauptleistungen may cover requirements analysis, design, development, testing, deployment and initial support. In construction, they can include planning, structural work, electrical and mechanical installations, site supervision and commissioning. In management consulting, Hauptleistungen often consist of current-state analysis, strategy development, implementation support and change management.

The process to define Hauptleistungen usually involves stakeholder interviews, requirements gathering and prioritization, drafting a clear scope description, specifying deliverables and acceptance criteria, and implementing change control. The quality of Hauptleistungen is typically measured by how well the scope is covered, adherence to timelines, compliance with quality standards, and customer satisfaction. Clear documentation supports predictable pricing, reduces disputes and enables performance-based contracting.