Parallel gateways in BPMN 2.0 help me model tasks that should run at the same time instead of one after another. This makes processes faster and often easier to understand. In this article, I explain parallel gateways in BPMN 2.0 in a clear and simple way. As a result, I can show how parallel flows work and when this gateway improves process efficiency.
What is Process Management?
Process management means organizing, monitoring, and improving processes within your business. I like to think of it as the engine that keeps your operations running smoothly. Good process management ensures tasks are done efficiently and correctly every single time.
Why do we need BPMN in Process Management?
You might wonder, “Why use BPMN?” The reason is straightforward: clarity and consistency. BPMN provides a common language to design, analyze, and optimize processes. With this visual language, everyone in your team easily understands each process, avoiding confusion and mistakes.
Parallel Gateways: Accelerating Your Processes
Imagine a customer support scenario. A customer submits an online request that needs both technical troubleshooting and account verification. Without parallel gateways, these tasks occur sequentially. Consequently, the customer waits longer. But if we use parallel gateways in BPMN 2.0, both tasks start immediately, saving valuable time.
Let’s dive into an example created with Camunda. A request triggers two separate tasks simultaneously: technical troubleshooting, taking 20 minutes, and account verification, taking 15 minutes. Using parallel gateways (also called “AND gateways”), both tasks start together. Once both are complete, they merge again with an “AND-join,” allowing the customer support process to proceed. Instead of 35 minutes waiting, the customer waits only 20 minutes—the longest single task duration.
Parallel gateways in BPMN 2.0 split the process into multiple paths running simultaneously. Later, they join these paths again. This ensures all tasks complete before the next step starts. Simple and efficient!
But how exactly does this work behind the scenes? BPMN uses tokens to manage process flows. Initially, one token moves through the gateway, splitting into two or more tokens depending on the paths available. Each token independently completes its task. Once all tokens reach the “AND-join,” they merge back into a single token, continuing through the process.
This concept might sound complex, but actually, it’s quite intuitive. Consider a real-life scenario: if account verification finishes first, it waits patiently until technical troubleshooting also concludes. Only then can the next process step begin, mirroring real-world logic.
Final Thoughts
Parallel gateways in BPMN 2.0 offer significant advantages in streamlining business processes. By handling multiple tasks simultaneously, they greatly enhance efficiency and reduce waiting times. When implemented thoughtfully, parallel gateways make your processes faster, clearer, and more productive.
Start leveraging parallel gateways today—your processes and customers will thank you!
What’s Next?
If I want to understand BPMN more clearly, the next step is to look at processes from the right point of view. That is why I continue with The Participant Perspective in BPMN. In that article, I explain how participants shape process understanding and why perspective matters so much in BPMN models. As a result, I can describe responsibilities, interactions, and process boundaries more clearly and create diagrams that communicate much better.
Explore the Full Picture with Requirements Modeling
If I want to understand requirements in a clearer and more practical way, I need more than text alone. I need models that show how concepts, processes, and system structures connect. In the main article on Requirements Modeling, I explore essential Modeling Concepts, Process Modeling with BPMN, and the structural perspective of UML. Together, these topics help me analyze requirements more clearly, communicate them more effectively, and build a stronger foundation for successful system design.
Credits: The diagrams were created with Camunda (opens in a new tab).
| Read more on Business Process Modeling and Notation (BPMN) |
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| Syntax and Semantics of BPMN BPMN Project Roles for Effective BPM The Participant Perspective in BPMN BPMN Core Elements |