# Event To achieve accurate data analysis and successful A/B Testing, you need to systematically collect and manage user behavior data — that is, Events. This guide provides best practices for designing and managing events optimized for Hackle. ### Event An Event refers to any action or occurrence triggered by a user within your service. With Hackle, you can collect a wide variety of events and use them as the basis for all data analysis and measuring experiment performance. **Key Event Examples**

Category	Examples
Behavior-based	Sign-up completed, search button clicked, product detail page entered, purchase completed, etc.
System-based	Server response time, etc.

Based on event data like the above, you can use Hackle in the following ways:

Hackle Service	Usage Examples
A/B Test	Calculate key metrics such as 'purchase conversion rate'
Data Analytics	Analyze user behavior patterns such as event occurrence frequency
Funnel Analysis	Identify drop-off points as users progress toward a specific goal (e.g., purchase)

{% hint style="info" %} To learn how to create and manage events through Hackle, refer to [Event Management](/en/event-management/event-management.md). {% endhint %} ### Taxonomy The process of classifying events according to specific rules is called Taxonomy.\ A well-designed Taxonomy allows anyone in the organization to clearly understand and use data, accelerating data-driven decision-making. To make effective and efficient data-driven decisions, you need to be able to accurately measure and analyze the data you want. The first step in this process is defining and classifying events — event taxonomy definition — which makes this work critically important. #### Event Naming Convention An event naming convention refers to agreed-upon rules within an organization for clearly identifying and classifying events. Establishing a naming convention for events is **critically important** for well-defined and well-organized events. Build a solid event naming convention to streamline communication across your organization! **Event Naming Convention Examples** Through events, we want to record 'where' a specific user performed an action and 'what they did.'

Category	Description	Examples
name	The location where the action occurred ('where')	`home`, `gnb`, `login_page`
action	The action taken ('what they did')	`click`, `scroll`, `view`, `submit`
object	The element that was acted upon	`search_button`, `login_form`, `product_banner`

Using the categories above, you can construct events as follows:

Taxonomy Category	Example	Description
action_name	`viewed_home`	User entered (viewed) the home screen
action_object_name	`clicked_search_home`	User clicked (clicked) the search button (search) on the home screen
action_object	`clicked_search`	User clicked (clicked) the search button (search) (regardless of location)

For user actions occurring in common areas such as the GNB, you can record them together as `clicked_search_gnb`.\ If you want to separately record the individual page where the GNB is displayed, it is recommended to include the page as a property value in the common event. {% hint style="info" %} [Check out the A to Z Guide: From Event Taxonomy Definition to Practical Application 👉](https://hackle.io/ko/post/event-taxonomy/?utm_source=blog) {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hackle.io/en/getting-started/event.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.