The evolution of managing business processes

Frederick Winslow Taylor publishes "The Principles of Scientific Management" — the first systematic theory of optimizing labor. For the first time a production process is treated as an object that can be precisely measured and improved. Taylor introduces the notions of output norms and time-and-motion study, laying the foundation for the whole later discipline of process management.

Henry Gantt develops the bar chart to visualize the sequence of work over time — the first widely used tool for graphically representing processes. The chart is so successful that it is still used unchanged today in every modern project management system.

Frank and Lillian Gilbreth introduce a system of flowcharts to describe workers’ motions. The American Society of Mechanical Engineers (ASME) standardizes a set of five symbols: operation, transport, inspection, delay, storage. This is the first attempt to create a unified language for describing processes.

Herman Goldstine and John von Neumann develop flowcharts to describe computer algorithms. The technique quickly migrates into business analysis: a rectangle is an operation, a diamond a condition, an oval a start/end. This language becomes the first truly widespread tool for describing processes.

The rise of systems thinking spurs structured analysis. Tom DeMarco and Ed Yourdon develop data flow diagrams (DFD). The concept of "functional decomposition" appears — describing a complex system through a hierarchy of simpler functions. In parallel, Gane and Sarson create their own version of the DFD notation.

Under the ICAM (Integrated Computer-Aided Manufacturing) program, the US Department of Defense develops the IDEF family of methodologies. IDEF0 is intended for functional modeling: each box has clearly separated inputs, outputs, controls and mechanisms (the ICOM model). The strictness of its semantics makes it a reference tool in the defense and aerospace industries.

Professor August-Wilhelm Scheer of Saarbrücken University introduces the EPC (Event-driven Process Chain) notation within the ARIS architectural framework. The methodology immediately becomes the de facto standard for SAP R/3 rollouts and spreads across Europe. By 2000 ARIS counts more than 8,000 enterprise customers.

Michael Hammer and James Champy publish the business bestseller of the decade. The term "business process reengineering" (BPR) enters wide use. For the first time the thesis is stated: processes should not be improved but rethought from scratch. The book launches a wave of BPR transformations in large corporations.

The Object Management Group publishes the UML standard, which includes activity diagrams for modeling system behavior and control flow. UML rapidly wins the enterprise software market; activity diagrams become the main tool for describing processes in an IT context.

James Womack and Daniel Jones popularize VSM in "Lean Thinking". The method, developed within the Toyota Production System, makes it possible to visualize the value stream and reveal waste. VSM becomes the main tool of Lean transformations in manufacturing and gradually spreads to the service sector.

The Manifesto for Agile Software Development changes the approach to processes in the IT industry. Lightweight notations emerge: User Story Map, Impact Map, Event Storming. Heavy enterprise methodologies begin to compete with adaptive approaches. In the long run this accelerates the spread of BPMN, positioned as a "light enough" alternative to ARIS/IDEF.

The Business Process Management Initiative publishes the first version of Business Process Model and Notation. The key ambition is a notation equally clear to business analysts and technical specialists, and directly executable in BPM engines through transformation to BPEL. The standard combines the best of flowcharts, EPC and technical notations.

The Object Management Group adopts BPMN 2.0, which becomes the official international standard ISO/IEC 19510. Full executable semantics and support for choreographies, conversations and collaboration are added. The standard achieves global dominance: by the 2020s BPMN is supported by more than 100 tool platforms.

OMG publishes the Case Management Model and Notation to describe loosely structured, adaptive processes — "cases". Unlike BPMN, the notation assumes no rigid sequence: events and tasks are activated conditionally. Together with DMN (the decision standard), CMMN forms the "OMG triad" alongside BPMN.

Process mining technologies make it possible to automatically extract process models from the event logs of enterprise systems. Tools like Celonis, ProM and Disco make BPM analysis available without any prior manual description of processes. The first AI assistants for generating BPMN diagrams from text descriptions appear.