COS Overview

Last Updated At: 2025-11-12 13:20:13

COS Introduction

Cloud Object Storage (COS) is a distributed storage service provided by the cloud platform for storing a massive number of files. It enables you to store and view data over the network at any time.

  • COS provides scalable, affordable, reliable, and secure data storage services for all users.
  • COS provides easy and fast access via a variety of methods, including consoles, APIs, and SDKs, realizing the storage and management of massive data.
  • COS provides an intuitive web management interface for operations such as file uploading, downloading, and management.

Object Storage Features

Object storage is a non-hierarchical data storage method in cloud storage. It does not use a directory tree structure, and each independent data (object) unit exists at the same level in the storage pool. Each object has a unique identifying name that can be used for listing and searching. Also, each object can contain metadata. Compared with traditional file storage methods, object storage has the following characteristics:

  • Data is stored as separate objects.
  • Data is not placed in a directory hierarchy, but exists in a flat address space.
  • The application identifies each individual data object by a unique address.
  • Designed for access at the application level using an HTTP RESTful API.