Definition:

Baidu is a search engine primarily focused on the Chinese language and the Chinese market. It enables people to find web pages, news, images, videos, maps and other resources through baidu.com and its applications.

The search engine is operated by Baidu, Inc., but the product and the company are not identical concepts. “Searching on Baidu” refers to its information retrieval system; the company also develops artificial intelligence, cloud, mapping, content and mobility services.

How the Baidu search engine works

Baidu uses discovery, indexing and ranking stages that are broadly comparable to those of other search engines, although its systems, criteria and operating environment are its own:

Crawling: automated programs discover URLs and follow links to retrieve accessible documents. The crawler entry explains this type of agent.
Processing and indexing: the system analyzes the retrieved content and decides which information may be added to its indexes.
Query interpretation: Baidu attempts to identify the search intent, language, location and context.
Retrieval and ranking: it selects results and displays them on a SERP that may combine links, answers, images, videos, maps and proprietary modules.

A crawlable URL is not guaranteed to be indexed or displayed for a particular query. Selection and ranking may vary according to the device, location, wording of the search and changes to the system.

What can appear in Baidu search results

The results page may combine different sources and formats:

Web results: links to pages considered relevant to the query.
News: reporting and information related to current topics.
Images and videos: visual modules sourced from the index and associated services.
Local and map results: places, businesses, routes and geographic data connected with Baidu Maps.
Knowledge and communities: answers or references from products such as Baidu Baike, Baidu Zhidao, Tieba or Wenku.
AI-assisted features: summaries, answers or other generative experiences whose availability and format may change.

The page brings together organic results, ecosystem content and advertising placements, which are distinct categories.

Baidu and Google differences

Baidu is often compared with Google because both provide web search and advertising, but simply calling it “the Chinese Google” conceals important differences:

Primary market: Baidu is particularly focused on users, content and services within China’s digital environment.
Language: its systems and products have a strong specialization in Chinese, although they can process queries and documents in other languages.
Ecosystem: Baidu frequently integrates its own services, while Google uses a different collection of products and sources.
Regulation: each search engine operates under the rules of the countries where it provides services; China has specific requirements and restrictions for publishing and accessing information.
Tools and algorithms: their webmaster platforms, result formats and ranking signals are not identical.

SEO for Baidu

SEO for Baidu aims to make a website crawlable, understandable and indexable while remaining relevant to users in the target market. Areas to review include:

Language and localization: adapting content to Chinese and its cultural context is generally more useful than translating it literally.
Technical accessibility: the server, resources and links should be consistently accessible to users and crawlers from the intended market.
Crawlable architecture: internal links, response codes, canonical tags, robots directives and sitemaps should accurately represent the site structure.
Quality and purpose: content should answer the query, identify its source and avoid duplication, manipulation or pages created solely to capture traffic.
Mobile experience and performance: readability, stability and speed affect real access to the content.
Indexability controls: the Baidu Search Resource Platform provides submission, crawl diagnostics, index reporting and site maintenance features.

Hosting a website in China or obtaining an ICP license may affect availability, performance and the operation of some projects, but neither should be presented as a universal ranking guarantee. Requirements depend on the infrastructure, organization and service provided.

Advertising on Baidu

Baidu also provides advertising within search results and other parts of its network. This activity should be distinguished from organic ranking:

Sponsored results: advertisements may appear in relation to keywords and other targeting criteria.
Management through Baidu Marketing: campaigns can configure advertisements, bids, audiences, budgets and measurement within the available options.
Access requirements: account creation and verification may depend on the country, business documentation, industry and current policies.

A PPC campaign buys advertising visibility; it does not automatically add pages to the organic index or improve their natural rankings.

Baidu as a company and its other services

Baidu, Inc. is a technology company founded in 2000 by Robin Li and Eric Xu. Search was its original core product, but the company has developed a broader ecosystem. Its products and business areas include:

Baidu Maps: mapping, navigation and place search.
Baidu Baike: a collaborative encyclopedia integrated into its content ecosystem.
Baidu Tieba and Zhidao: communities and question-and-answer services.
Baidu Wenku and Wangpan: document and cloud storage services.
Artificial intelligence and cloud: ERNIE models, Baidu AI Cloud services and tools for businesses and developers.
Apollo: technologies and services related to autonomous driving and mobility.

These products form part of the Baidu, Inc. ecosystem; Baidu Search is its search engine.