# Overview

> Learn about the building blocks that make up a Zapbot chat flow

Source: https://edesy.in/docs/zapbot/blocks

Blocks are the atomic building blocks of a zapbot chat. You can chain any blocks together to create complex conversation flows. When you drag and drop a block in the zapbot flow, by default it will be inserted into a group that can have a title. Blocks are always contained in groups.

There are multiple block categories to make it easier to find the right block for your needs:

## Bubbles

Bubble blocks are used to show bubbles that can be used to display information to the user.

![Bubble blocks](https://edesy.in/images/zapbot/blocks/bubbles.png)

## Inputs

Input blocks are used to ask the user for input. It will stop the conversation and wait for the user to provide input.

![Input blocks](https://edesy.in/images/zapbot/blocks/inputs.png)

## Logic

Logic blocks are used to perform background operations. They are not visible to the users.

![Logic blocks](https://edesy.in/images/zapbot/blocks/logic.png)

## Integrations

Integration blocks are used to trigger external services operations.

> **Note:** Interested in implementing your own integration block? Contact our team to learn how to create custom blocks.

![Integration blocks](https://edesy.in/images/zapbot/blocks/integrations.png)