> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gomobile.ma/llms.txt
> Use this file to discover all available pages before exploring further.

# Core Concepts

> The fundamental building blocks of Gomobile

This section explains the fundamental building blocks of Gomobile. Understanding these concepts will help you design effective campaigns and troubleshoot issues when they arise.

## The campaign lifecycle

A typical campaign flows through these stages:

1. **Setup** - Create contacts, organize them into audiences, and design your call flow
2. **Configuration** - Build a program that ties everything together with scheduling and retry rules
3. **Execution** - Launch the program and let Gomobile handle the calls
4. **Monitoring** - Track progress and analyze results

Each concept below plays a role in this lifecycle.

## Key concepts

<CardGroup cols="2">
  <Card title="Organizations" icon="building" href="/core-concepts/organizations">
    Your organization is the container for everything else. It defines your team, settings, and subscription plan.
  </Card>

  <Card title="Contacts" icon="user" href="/core-concepts/contacts">
    Contacts are the people you call. They store phone numbers and any additional information for personalization.
  </Card>

  <Card title="Audiences" icon="users" href="/core-concepts/audiences">
    Audiences group contacts into targetable segments. Target entire groups with your programs.
  </Card>

  <Card title="Flows" icon="diagram-project" href="/core-concepts/flows">
    Flows define call logic. Visual blueprints made of nodes that determine what happens at each step.
  </Card>

  <Card title="Programs" icon="play" href="/core-concepts/programs">
    Programs are campaign configurations. They specify audience, flow, schedule, and retry rules.
  </Card>

  <Card title="Executions" icon="chart-line" href="/core-concepts/executions">
    Executions are running instances of programs. Track progress through the audience.
  </Card>
</CardGroup>

## How they connect

```
┌─────────────────────────────────────────────────────────┐
│                     Organization                         │
│  ┌─────────┐  ┌─────────┐  ┌─────────┐  ┌─────────┐    │
│  │ Contact │  │ Contact │  │ Contact │  │ Contact │    │
│  └────┬────┘  └────┬────┘  └────┬────┘  └────┬────┘    │
│       │            │            │            │          │
│       └──────┬─────┴─────┬──────┘            │          │
│              ▼           ▼                   ▼          │
│         ┌────────┐  ┌────────┐         ┌────────┐       │
│         │Audience│  │Audience│         │Audience│       │
│         └────┬───┘  └────┬───┘         └────┬───┘       │
│              │           │                  │           │
│              └─────┬─────┘                  │           │
│                    ▼                        │           │
│              ┌──────────┐    ┌──────┐       │           │
│              │ Program  │◄───│ Flow │       │           │
│              └────┬─────┘    └──────┘       │           │
│                   │                         │           │
│                   ▼                         │           │
│              ┌──────────┐                   │           │
│              │Execution │                   │           │
│              └──────────┘                   │           │
└─────────────────────────────────────────────────────────┘
```

## Next steps

Dive into each concept to understand the details:

* Start with [Organizations](/core-concepts/organizations) to understand the container model
* Learn about [Contacts](/core-concepts/contacts) and [Audiences](/core-concepts/audiences) for data management
* Explore [Flows](/core-concepts/flows) for call logic design
* Understand [Programs](/core-concepts/programs) and [Executions](/core-concepts/executions) for campaign management