BPMN (Business Process Model and Notation) is an internationally standardized notation for visualizing and analyzing business processes. In the modern era of increasingly complex operations, visualizing operational procedures makes it easier to identify waste and inefficiencies, creating a foundation for implementing improvement measures. It also helps to eliminate reliance on specific individuals (knowledge hoarding) and strengthen coordination among personnel, leading many companies to consider its adoption.
This article comprehensively introduces the fundamental concepts of BPMN, its adoption benefits, and specific elements, symbols, writing procedures, and use cases. We will explain technical terms in the simplest way possible to ensure ease of understanding, even for those new to BPMN.
By the time you finish reading, the utility of BPMN for business process improvement will be clear, and you will grasp key points for actually implementing it within your own company or team. We encourage you to gain a comprehensive knowledge of BPMN and utilize it for more advanced business process management.
Table of Contents
What is BPMN? — Overview and Uses
By first understanding what BPMN is and how it is used, you can easily gain a valuable overview of its potential.
BPMN is an international standard developed to uniformly represent business processes. It graphically charts the flow of a business process from start to finish and visualizes the involved personnel and systems, allowing for a comprehensive, bird’s-eye view of the entire operation. A major strength of BPMN is that it makes it easier to understand the context of each task and decision within the process.
BPMN is particularly effective in cases where operations span multiple departments or systems. Since all stakeholders can review the process using the same notation, it reduces misunderstandings and promotes swift collaboration. Because of this, it is gaining attention as an efficient business improvement methodology, regardless of organization size.
Furthermore, utilizing BPMN diagrams offers the advantage of making it easier to prioritize challenges that need improvement and simulate the necessary effort required. Concepts that might be difficult to grasp solely from textual procedure manuals become visually clear, facilitating smoother discussions with colleagues and stakeholders.
Benefits that BPMN brings to Business Improvement
We will now review the advantages of adopting BPMN, such as information sharing through visualization and improved operational efficiency.
The biggest benefit is the visualization effect, which makes complex business processes easy to understand at a glance. Because stakeholders share the same perspective, it becomes easier to objectively identify task assignments and bottlenecks. As a result, this prevents over-reliance on specific individuals (knowledge silos) and leads to smoother transitions and handovers.
Furthermore, using BPMN makes it simple to discover missing steps or redundant tasks. Early detection of these issues not only enhances operational efficiency but also contributes to reducing time and costs. Especially in large-scale projects or cross-departmental operations, BPMN becomes a powerful tool for minimizing misunderstandings.
Additionally, BPMN is effective when identifying constraints in existing systems or determining requirements for new systems. The common understanding derived from visualization makes it easier to pinpoint optimal improvement measures and investment targets, thus increasing the success rate of projects.
Main Elements and Symbols Used in BPMN
We will now introduce the basic elements and symbols you should know to correctly understand and create BPMN diagrams.
BPMN uses various elements and symbols to clearly show the flow of a business process from beginning to end. To represent a process correctly, it is important to understand fundamental concepts such as Events, Activities, and Gateways. Grasping the characteristics and usage points of each element allows you to create more accurate flow diagrams.
Furthermore, the concepts of Pools and Swimlanes are extremely helpful for gaining a comprehensive view of multiple departments or organizations, and for looking at processes ranging from small tasks to large phases. By properly using the Solid Flow (Sequence Flow) and Dashed Flow (Message Flow), you can visually distinguish between the sequence of work and the flow of information exchange.
While there is no need to memorize all these elements systematically, understanding the characteristics of each will help prevent omissions in your business process models. Especially when drawing BPMN for the first time, creating a simple flow focusing on the main elements is the shortest path to success.
Events (Start, Intermediate, End)
Events represent the starting point, the endpoint, or a trigger point within the process. Generally, a Start Event indicates the initiation of the process, and an End Event indicates the completion of all steps. Intermediate Events are used to manage specific actions, such as when branching occurs or when receiving a message.
Activities (Tasks)
Activities are elements that represent the concrete work executed within the business flow. They help organize how individual tasks connect and contribute to the overall deliverable or objective. The clearer the name and content of the activity, the easier it will be to understand the merging points and prerequisites for subsequent steps.
Gateways (Branching)
Gateways are elements that control the flow of a process, responsible for branching into multiple routes based on conditions or merging those routes back together. For example, they can represent complex flows where, if the approval result is “Yes,” the process moves to the next task, but if it is “No,” a revision step is inserted. By using Gateways appropriately, all stakeholders can clearly understand the intent of the branching.
Pools and Swimlanes
A Pool represents the entire organization or scope of the business process, and a Swimlane refers to the partition lines within the Pool that separate roles such as individuals or departments. When representing interactions between multiple organizations, it is common practice to arrange Pools in parallel and connect them using Message Flows. This makes it easy to grasp at a glance who performs what task and when.
Flows (Solid and Dashed Lines)
There are typically two main types of flows in BPMN. The solid line flow, primarily connecting the tasks within a process, is called the Sequence Flow and reliably indicates the order of work. In contrast, the dashed line flow, known as the Message Flow, represents communication or the exchange of documents between Pools, and is used to visualize communication with external organizations.
BPMN vs. UML — Key Differences and When to Use Which
We will now review the differences and selection criteria between BPMN, which specializes in business processes, and UML, which covers a wide range of software development.
UML (Unified Modeling Language) is a collection of model notations widely used in software design and system development, expressing system structure and behavior through multiple diagrams. In contrast, BPMN is specialized in visualizing business processes and is characterized by representations more directly linked to the actual business flow.
Therefore, if the primary goal is visualization and improvement of operational procedures, BPMN is suitable. If the goal is to comprehensively grasp the design of the overall system and the development process, UML is more useful. While the roles of both notations sometimes overlap, it is best to use them selectively based on your company’s challenges and objectives upon adoption.
Furthermore, BPMN diagrams tend to be intuitively easier to understand in discussions involving business staff and management. Conversely, UML is often valued for aligning understanding among developers. Therefore, it is recommended to clarify the specific use case before making a decision.
Steps for Creating and Implementing BPMN
We will organize the actual process of creating BPMN step-by-step to support a smooth implementation.
The most crucial aspect of writing BPMN is to clearly define the purpose and scope beforehand and ensure that stakeholders share a common understanding. This prevents basic information, such as what the main process is, from becoming vague and minimizes unnecessary rework during the diagram creation phase. By grasping the key points to address in each step, you can visualize the flow efficiently.
Here, we will explain the process in five stages, from setting the purpose and scope to building the process and finally documentation. It is particularly important to consider not only the accuracy of the notation being created but also who will read it and how it will be updated. Approach each step diligently to ensure smooth information sharing within the team.
If you are new to writing BPMN, it is effective to start with a simple process and gradually increase the elements and branching to deepen your understanding. Even when dealing with inherently complex flows, creating a simple model in the initial stage makes it easier to find clues for organization and improvement.
Step 1: Clarify the Purpose and Scope
First, clearly define the reason for writing this BPMN and the desired outcome. For example, the drawing style and necessary elements will vary significantly depending on whether the objective is to organize requirements for new system development or to eliminate waste in operations. Defining the scope clarifies the boundaries of what needs to be modeled, making it easier for the resulting diagram to be directly relevant to practical business use.
Step 2: Identify Stakeholders and Systems
Next, list and organize all the people, organizations, and systems involved in the process. If there are any omissions when visualizing cooperation between departments or interactions with external systems, accurate analysis will be impossible. By taking into account elements like cloud service integrations and external vendors, you will be prepared to create a more precise BPMN.
Step 3: Set the Process Start and End Events
When starting the modeling, clearly define the moment the operation begins and the state that constitutes the final goal. By defining the Start Event and End Event, the scope of the process becomes visually easier to grasp, allowing for a better understanding of the overall structure and potential risks of rework.
Step 4: Arrange Activities and Gateways
Actual work tasks (Activities) and branching conditions (Gateways) are then placed onto the flow. What is important here is to write out each task specifically and clarify its relationship with subsequent steps and parallel work. If Gateways are used frequently, the condition settings can become complex, so consider simplification where necessary.
Step 5: Connect the Flow and Organize Supplementary Information
Finally, connect the Events and Activities with Sequence Flows, and use Pools and Swimlanes to clearly indicate the responsible departments and work areas. The key is to use dashed Message Flows for external communication to distinguish interactions with related systems or external vendors. Additionally, by adding annotations and comments, you can complete a BPMN diagram that minimizes confusion even when operated over a long period.
Tips and Best Practices for Drawing BPMN
To accurately utilize BPMN diagrams, it is crucial to understand the key points for creation and manage them in a way that suits your operational environment.
Even if the correct symbols are used, a lack of consistency in rules or terminology will lead to confusion. When creating diagrams, it is important for the personnel involved to share naming conventions and color-coding rules, ensuring that the same concept is not expressed using different names. Furthermore, to enhance the visual clarity of the diagram, use techniques such as incorporating appropriate whitespace and grouping related elements together.
In addition, the finished BPMN must be reviewed every time a change or addition occurs. By implementing version control for the document and clearly indicating who made the change and when, the process will consistently reflect the latest reality. If this update work is neglected, the BPMN, however well-made, may become disconnected from the actual situation.
Common mistakes include the incorrect use of Gateways or the confusion between Message Flows and Sequence Flows. To reduce such errors, it is advisable to internally share drawing examples or guides.
Standardize Symbol Usage and Naming Conventions
It is desirable to agree on the naming rules for symbols and task names used in BPMN in advance. For example, simply standardizing whether task names should start with a verb or be written in a noun form can significantly change the readability of the diagram. In projects involving many people, sharing this rule is critical to the quality of the final result.
Enhance Readability through Layout and Color Usage
Since business flow diagrams contain a lot of information at once, visibility will decrease if layout and color scheme are not carefully considered. Emphasize important elements with subdued colors and avoid excessive use of background colors. It is crucial to maintain appropriate spacing and aim for a layout that conveys the logical structure and information priority clearly.
Document and Share Smoothly with Stakeholders
BPMN is not simply created and done; it is also utilized for subsequent improvement consideration and regular updates. Therefore, it is necessary to decide how the issued diagrams will be stored and when they will be reviewed. Establishing rules for documentation ensures continued utilization even through personnel transfers or organizational changes, and aids in the smooth transfer of operational knowledge.
Common Pitfalls
A common pitfall is where a BPMN diagram, once created, is neglected, causing it to diverge from the actual operations. Furthermore, it is not uncommon for the flow to become overly complex and confusing for the reader due to concentrating multiple Gateways in one spot. To learn from these failures, it is important to focus on continuous maintenance and a properly segmented model design from the start.
How to Use BPMN Creation Tools — Templates and Cloud Services
To effectively utilize BPMN in your operations, selecting the right tool based on your objective is crucial. You can easily draw diagrams using tools like Excel or PowerPoint, but if you want to integrate them into your actual operations and continuously improve them, we recommend adopting a specialized tool.
Questetra BPM Suite is a cloud-based BPMS (Business Process Management System) compliant with BPMN 2.0. Its major feature is that the BPMN diagrams you draw can be used directly as executable flows. You can build business flows with no code, visualize progress status, analyze bottlenecks, and integrate with external services. You can experience it for free for 60 days, so we encourage you to try it out.
As a tool that can provide integrated support—not just for drawing diagrams but also for execution and improvement—it is ideal for organizations that want to leverage BPMN in a serious manner.
Concrete Examples of Business Efficiency Improvement Using BPMN
We will now look at how BPMN proves useful in real business settings, using examples where tangible results have been achieved.
BPMN is not merely a flow visualization tool; it contributes to overall operational efficiency and the optimization of information transfer across the organization. Its benefits are especially noticeable in environments where coordination among multiple departments is frequent. Here, we will use two typical scenarios to explain the effectiveness of improvement achieved through BPMN.
Successful case studies point out that improvement leads not only to reduced operational effort (man-hours) but also to a significant decrease in communication costs and errors. Because the diagram functions as an overhead view that the entire team can share, it promotes smooth decision-making by eliminating coordination errors while avoiding reliance on specific individuals. The ability to realize such results in a short period is a major advantage in today’s demanding business environment.
Furthermore, the practice of writing BPMN is highly valued not only when identifying problems in existing processes but also when introducing new systems or operational procedures. In the process of gathering feedback from all stakeholders based on the model and deriving the optimal solution, BPMN becomes the infrastructure that enhances successful outcomes.
Improving Information Sharing Among Field Staff
As the number of personnel increases, coordination errors in the business flow and delays in information transfer tend to occur. By utilizing BPMN, everyone can refer to a common process diagram and understand the sequence of tasks, thus reducing omissions and duplication. For example, there are cases where using a BPMN diagram to streamline the ordering process from store staff to headquarters succeeded in significantly improving the accuracy of monthly inventory adjustments.
Utilizing Business Flow when Implementing Systems
When implementing a new system, reviewing the current flow and organizing requirements are essential. By using a BPMN diagram to visualize which tasks will be automated by the system and which areas will still require manual input, you can proactively identify potential issues that might arise after deployment. Consequently, this makes it easier to achieve more effective system operation while suppressing unnecessary development and excess costs.
Summary and Conclusion
We will summarize the achievements of BPMN and outline the outlook for continuous business improvement moving forward.
BPMN is a powerful tool that visually represents complex business processes and enables smooth information sharing among stakeholders. If understood and used accurately, you can expect multi-faceted benefits, including the elimination of reliance on specific individuals (knowledge silos), increased operational efficiency, and rapid problem analysis. In case studies from companies that have actively utilized it, there are many reports of success in reducing effort (man-hours) and errors, as well as improved inter-departmental communication.
The crucial point is not to be satisfied with simply creating the BPMN, but to continuously update it in response to changes in operations and maintain the improvement cycle. By regularly reviewing the flow charts, you can promptly identify new challenges or deficiencies. Furthermore, by being meticulous in defining the objectives and selecting the right tools during implementation, you can achieve stable, long-term results.
As business digitization continues to advance, BPMN is expected to draw increasing attention as a core component of organizational reform and system implementation. We encourage you to use this article as a reference, apply BPMN to solve your company’s challenges, and lead the way toward continuous business improvement.
[Supplement] For Those Who Want to Start Learning Immediately
For those who want to start learning or trying out BPM notation immediately, the following articles are also recommended. They offer abundant visual content, such as videos, and cover a wide range of topics, from beginner introductions to slightly more specialized content. Please use them according to your needs and skill level.