# Overview

Welcome to Data Ingestion Service API Reference. Data Ingestion Service (DIS) provides efficient collection, transmission, and distribution capabilities for real-time IoT and Internet data, supports multiple IoT protocols, and provides various APIs to help you quickly build real-time data applications.

This document describes how to use application programming interfaces (APIs) to perform operations on DIS, such as uploading or downloading data. For details about all supported operations, see API Overview.

If you plan to access DIS through an API, ensure that you are familiar with DIS concepts. For details, see "Service Overview" in the DIS User Guide.

Parent topic: Before You Start