# Event

The **Event** component represents significant points in time within a business process.\
Events are used to **initiate, control, and terminate** the execution flow of a process.

In ONEWEB **Process Designer**, Event nodes follow **BPMN (Business Process Model and Notation)** standards and define **when a process starts, how it reacts to specific conditions, and when it ends**.

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### Purpose of Events

Events are essential for defining the lifecycle of a process. They are used to:

* Start a process execution
* Mark the completion of a process
* Handle specific conditions such as waiting, interruptions, or triggers

Without Event nodes, a process has no defined entry or exit points.

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### Types of Event Nodes

The **Event** section in Process Designer contains nodes that can be used at different stages of the process flow.

#### Start Event

* Defines **how and when a process begins**
* Every process must have at least one Start Event
* Acts as the entry point of the workflow

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#### Intermediate Event *(if applicable)*

* Occurs **between activities** in a process
* Used to model waiting conditions, triggers, or interruptions
* Often associated with boundary or timing behavior

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#### End Event

* Defines **how a process terminates**
* Marks the completion of the workflow
* A process may have one or multiple End Events, depending on logic paths

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### Usage Guidelines

* A valid process must start with a **Start Event**
* Every execution path should eventually lead to an **End Event**
* Use clear naming and positioning to improve diagram readability
* Combine Event nodes with Gateways and Activities to model real‑world business scenarios

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### Summary

The **Event** component defines the **beginning, flow control points, and termination** of a business process.

Key points:

* Events are mandatory structural elements in BPMN processes
* Used to initiate and terminate process flows
* Ensure proper lifecycle management of workflows
* Improve clarity and correctness of process execution

Understanding Event nodes is fundamental to designing **valid, executable, and well‑structured processes** in ONEWEB Process Designer.


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