What Is BPMN? Definition and How It Differs from Flowcharts
Seen "BPMN" in a process document and wondered how it differs from the flowcharts you already draw? The name sounds technical, but the core ideas are simple — and useful even in everyday diagrams.
This guide covers what BPMN is, its five core elements, the key differences from ordinary flowcharts, and a practical rule for choosing between them.
What you will learn
- The definition of BPMN — the OMG international standard (BPMN 2.0)
- The 5 core elements: events, activities, gateways, flows, and pools
- 3 practical differences between BPMN and simple flowcharts
- How to decide which notation to use for your process
What Is BPMN? The International Standard for Processes
BPMN (Business Process Model and Notation) is the international standard notation for diagramming business processes. It is maintained by the Object Management Group (OMG), with BPMN 2.0 (2011) as the current version, also published as ISO/IEC 19510. In short: BPMN is a shared rulebook so that anyone, anywhere, reads a process diagram the same way.
It shines where precision pays off: requirements for system development, workflow/BPM automation, compliance documentation, and processes that cross departments or companies. For everyday internal sharing, a simpler flowchart is often faster — more on that below.
The 5 Core Elements of BPMN
BPMN 2.0 defines over 100 symbols, but you can model most real processes with just five element groups.
| Element | Shape | Meaning |
|---|---|---|
| Event | Circle | Something that happens: start (thin), intermediate, or end (thick) |
| Activity | Rounded rectangle | A task such as "create a quote" — the most common element |
| Gateway | Diamond | Branching and merging: exclusive (X), parallel (+), inclusive (O) |
| Sequence flow | Solid arrow | The order in which work is performed |
| Pool / Lane | Container with dividers | Who does the work: organizations, departments, roles |
The standout feature is the gateway: unlike a generic flowchart diamond, BPMN distinguishes exclusive choices from parallel work that runs at the same time — something ordinary flowcharts cannot express precisely.
BPMN vs. Simple Flowcharts: 3 Differences
The fundamental difference is standardization. It plays out in three practical ways:
| Aspect | BPMN | Simple flowchart |
|---|---|---|
| Notation rules | Strict international standard, one shared meaning | Loose conventions, varies by team |
| Expressiveness | Parallel work, exceptions, cross-organization messages | Sequential steps and simple branches |
| Audience | Engineers, BPM specialists, process designers | Coworkers, new hires, everyday readers |
If your readers do not know BPMN symbols, its precision is wasted on them — audience is the first question to ask when choosing a notation.
A BPMN-Style Example: Order to Shipment
You can apply BPMN thinking in any flowchart tool. This example makes the start and end events explicit and uses a parallel gateway so shipping preparation and invoicing run at the same time.
With DrillSpark, you can describe a process like this in plain language and AI drafts the flowchart in about 30 seconds — free plan available, so you can sketch first and worry about notation later.
Which Should You Use? A Practical Rule
Choose by audience and goal. Use BPMN when the diagram feeds system implementation, BPM tooling, or complex cross-department design. Use a simple flowchart for internal sharing, handovers, and training.
- Internal sharing or onboarding: a simple flowchart is enough
- Workflow/BPM implementation: BPMN, since engines read BPMN 2.0 directly
- Lots of parallel work and exceptions: BPMN's gateways pay off
When in doubt, start with a simple flowchart. Visualizing the process at all matters far more than picking the perfect notation — you can always adopt BPMN ideas where you need them.