BPMN: Business Process Model and Notation in business process modeling

What is BPMN and why is it the standard in process modeling?

BPMN (Business Process Model and Notation) is a standard graphical notation whose primary purpose is to precisely and visually map business processes. Thanks to its versatility and precision, BPMN has gained the status of a global standard, with 2005 being a key year when the influential OMG (Object Management Group) consortium took over the development of the notation. The breakthrough came with BPMN 2.0, which not only standardised the graphics, but also introduced the ability to automatically generate diagrams using software. This innovation, combined with the authority of OMG, made BPMN the dominant and universal language for business process modelling around the world.

Basic elements of BPMN notation

To effectively create a business process model, BPMN notation relies on a set of logical visual components. These elements fall into three main categories, which together form a complete and understandable diagram:

• Flow objects (such as events, activities, and gates) are at the heart of the process, defining what happens, when and how.
• Connecting objects (including sequence flows and communication flows) are responsible for establishing the order of steps and the flow of information between elements.
• Swimlanes, or pools and lanes, organise the diagram by clearly assigning tasks to specific roles, departments, or process participants.

How to read and create BPMN diagrams?

Modelling in BPMN is based on simple, logical rules that ensure consistency in diagrams. Each process must have a clear direction – it must start with an initial event, end with a final event and be read from left to right. To avoid chaos, tasks must be assigned to specific roles or units using lanes and pools. It is also important to adjust the level of detail to the purpose of the diagram:

• Process maps (general) are for managers.
• Process diagrams (detailed) are for analysts, showing exactly the logic of decisions and the flow.
• Executable models (technical) are for IT teams, ready for implementation.

Whatever the level, success depends on best practices: all elements must have clear names, unnecessary line crossings should be avoided and complex parts should be hidden in sub-processes. Only then will the diagram be a truly effective and understandable communication tool.

BPMN in practice – application examples

BPMN proves that the most effective IT tools quickly find their way into the business world. Despite its technical roots, it is a flexible, global standard that works successfully in literally every field. For example, in customer service, BPMN maps the entire customer journey – from the initial problem report to the provision of a satisfactory solution. The effect is immediate: improved service quality and reduced waiting times. It works similarly in finance and purchasing, where the system enforces full transparency. Each purchase request is tracked through a mandatory, strictly defined approval path (for example, from the department head and then the director). This approach eliminates errors and ensures budgetary discipline.

BPMN is also an essential tool in project management, as it allows for the introduction of perfect order and predictability in the course of activities. This translates into a better project schedule and the project documentation becomes transparent. The visualisation of a typical project process modelled in this notation looks as follows:

• Start: the process begins with the analysis phase.
• Parallel tasks: then, thanks to the use of a parallel gate symbol, it is possible to start two independent activities simultaneously, such as design and coding, which significantly speeds up project implementation.
• Decision: once both tasks are completed, the flow reaches the decision gate, which verifies the key condition: Have the tests been successful?
• End or corrections: depending on the answer, the process moves on to the implementation stage (if “Yes”) or is sent back to the correction path (if “No”).

From BPMN model to implementation – process automation

The true value of BPMN becomes apparent when we stop treating it solely as a diagram and start seeing it as a direct instruction for a computer. Thanks to the fact that BPMN 2.0 is a so-called executable model, the diagram can be uploaded directly to specialised software, i.e. the BPM Engine.

The BPM engine takes on the role of the main process manager in the organisation. Its basic tasks include not only automatically assigning tasks to the right people at the right time, but also making decisions independently by performing simple choices or calculations, in accordance with the logic stored in gate symbols. The key to full automation is the BPM Engine’s ability to communicate with other systems in the company. For example, when a process reaches the payment stage, the Engine automatically orders the ERP system to post the payment, and after closing the customer’s case, it immediately refreshes their status in the CRM system. In this way, process management tools using BPMN standardise repetitive workflows, minimise errors and facilitate the measurement of time and work efficiency.

BPMN in project management

The use of the BPMN standard has a significant impact on operational efficiency, as it enables precise process mapping of the entire project lifecycle – from initiation, through the planning and execution phases, to closure. When a team works based on BPMN, the workflow becomes uniform and fully predictable. Instead of relying on verbal agreements and vague procedures, all repeatable processes (such as bug reporting, change implementation, or quality verification) are modelled in the same way. This standardisation brings measurable benefits: it facilitates onboarding (new team members quickly learn the rules of work), minimises errors (the process is consistently performed in accordance with best practice) and facilitates measurement (standardised steps allow for precise measurement of time and work efficiency).

Using the example of a kick-off meeting process in BPMN, the action is perfectly clear: the process begins with the event ‘budget approval’. Then the project manager (using the track) performs the action ‘prepare the agenda’. In the next step, a parallel gate is used, which simultaneously assigns two activities: ‘setting the date’ and ‘sending invitations’. This approach ensures that the meeting is effectively planned and communicated to all participants, eliminating the risk of communication errors.

Tools for creating BPMN diagrams

Although a BPMN diagram can be sketched on a piece of paper, its full potential can only be realised with the use of specialised tools that support standardisation and automation. Dedicated BPMN editors, such as Camunda Modeler or Signavio, offer an intuitive interface, check the correctness of models (validation) and, most importantly, can generate code ready for implementation in BPM engines. It is also worth remembering about project management platforms. FlexiProject, a project management system , although it has a different main task, uses process logic to standardise and organise repetitive project workflows within the framework of scheduling and task management.

The most important advantage of these tools is the integration of process maps with the task schedule. This means that the optimised BPMN model automatically becomes a template that generates a list of tasks and dependencies in the project schedule, thus eliminating discrepancies between the ideal model and its actual implementation.

Summary: BPMN as a universal language for business processes

The use of BPMN notation brings immediate benefits to companies. Thanks to this universal visual language, processes are standardised, which directly leads to rapid productivity growth – BPMN eliminates ambiguities and speeds up the entire workflow. As a result, organisations not only reduce errors in their operations, but also achieve significantly better and more effective management of their entire processes. This is why BPMN is a common standard among market leaders. It is used by giants such as BMW and General Electric, which clearly confirms its strategic role in operational efficiency.