Browse Definitions :
Definition

search engine

On the Internet, a search engine is a coordinated set of programs that includes:

  • A spider (also called a "crawler" or a "bot") that explores the Internet by following hyperlinks, starting with a core group of "seed" URLs covering major hubs.
  • A program that creates a huge index (or database) from the pages that have been read
  • A program that receives your search request, compares it to the entries in the index, and returns results to you

Google is the most widely used search engine in the world capturing about 92% of search users worldwide. Yahoo and Bing come in second at just over 2% each. DuckDuckGo has gained some popularity due to their focus on protecting user's private search data. Other popular search engines in the world are Baidu (China), Yandex (Russia), and Naver (South Korea).

Different Search Engine Approaches

  • Major search engines such as Google, Bing, and Yahoo index the content of a large portion of the Web and allow users to query their index to find relevant pages.
  • Specialized content search engines may be more selective about what part of the Web is crawled and indexed.
  • Country specific search engines may prioritize in-language websites over English websites.
  • Individual Web sites, especially larger corporate sites, may use a search engine to index and retrieve the content of just their own site. Some of the major search engine companies license or sell their search engines for use on individual sites.

Where to Search

Google is the search engine of choice for most people in the world. The quality of their results tends to outshine their competitors. Search results are integrated with their other databases: Maps, News, Images, Gmail, and Videos (Google owns YouTube). Google has shifted over the years to providing results based strictly on popularity (links) to more of a focus on the user intent of queries.

Some users may prefer to use Bing or Yahoo for their other integrated offerings. Some users may prefer a site that prioritizes data privacy like DuckDuckGo.

How to Search

For tips on entering your search argument, see each search engine. Google has a helpful page on how to search.

This was last updated in October 2018

Continue Reading About search engine

SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • private key

    A private key, also known as a secret key, is a variable in cryptography that is used with an algorithm to encrypt and decrypt ...

  • DOS (disk operating system)

    A DOS, or disk operating system, is an operating system that runs from a disk drive. The term can also refer to a particular ...

  • security token

    A security token is a physical or digital device that provides two-factor authentication for a user to prove their identity in a ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

SearchStorage
  • What is RAID 6?

    RAID 6, also known as double-parity RAID, uses two parity stripes on each disk. It allows for two disk failures within the RAID ...

  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

  • VRAM (video RAM)

    VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.

Close