---
title: Core Components
slug: v4-4/core-components
docTags: 
createdAt: 2023-08-09T17:43:20.605Z
---

This article provides a high-level overview of the main components that make up the Ditto platform, along with the standard terminology used throughout the documentation.

![](https://api.archbee.com/api/optimize/qoRkNxW5fJ81r_NqVpc8C/YZy9PfPo0j6AvoYuVjCsM_dql-anatomy.png)

The following table provides an overview of standard Ditto terms and definitions to be familiar with:

| **Item** | **Term**                  | **Definition**                                                                                                                                                                                                                                                         |
| -------- | ------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 1        | Small Peer                | Your app integrated with the Ditto SDK. The Ditto SDK consists of both the local Ditto store and the functionality that enables platform capabilities. ([Small Peer: Your App Integrated with Ditto](docId:16xYoE8rKQMc3u3uC7m--))                                     |
| 2        | Big Peer                  | A cloud deployment that appears as any other peer in the decentralized network; however, with elevated access permissions and advanced capabilities of replication, authentication, and authorization. ([Big Peer: A Powerful Component](docId:16xYoE8rKQMc3u3uC7m--)) |
| 3        | Auth Service              | The `OnlineWithAuthentication` API that you use to request your access credentials for authentication. ([Getting Your Credentials](docId\:JQjYL9gbvsgI9vlW3Ywvc))                                                                                                      |
| 4        | HTTP API                  | The API you can use to programmatically interact with the Big Peer. ([HTTP API](docId\:TqWDcet3fI3M5VGayqLaf))                                                                                                                                                         |
| 5        | Change Data Capture (CDC) | The premium upgrade to implement realtime event streaming from Ditto to your own third-party database and Apache Kafka topics([Change Data Capture](docId\:QBWrp9sJXBnY_ds-p_Es6))                                                                                     |