18 March, 2023
What is a search engine? The 6 most popular ones

In today's modern world, any device with an internet connection lets you look up almost anything. Google is also a Search Engine that can return millions of results for you. So What is a search engine? Which search engine is the most popular today? To find out, follow along with MONA Media in the article below.
What is a search engine?
Search Engine (Web Search Engine), known in Vietnamese as Search tool. It is a common system for looking up information on the internet. Put simply, a search engine is a website where users type the words or phrases they want to know about into a search box and get back results such as websites, images, videos, maps and addresses with detailed information about what they need.
A search engine is a tool for finding information, such as Google, Bing and Yahoo
The words or phrases users type into the search bar are called keywords. Results that contain or relate to that keyword are shown in a specific ranking order, determined by the proprietary algorithms of the search engine the user is on.
Today, besides traditional search engines, users also use AI search engines such as Google AI Overview, Bing Copilot or ChatGPT. These platforms don't just list links. They give direct answers, summarize data with clear citations and even let you ask follow-up questions to dig deeper.
That's why modern SEO can't ignore AI SEO services. Businesses need quality content that is clear and in depth, so AI tools can “read,” select and cite it. Do this well and your brand not only appears at the top of Google but becomes the answer AI mentions directly in its responses to users. That is the real competitive edge as AI search gradually takes over.
-> You may also want to read:
- How to rank in Google AI Overview latest 2026
- SEO guide to reach the top effectively for your website and raise your Google ranking
- The most common SEO terms every SEOer should know
Many of you ask Huy where to read SEO news that is accurate, reliable and free of noise. In this video Huy sums up the official channels and SEO communities he trusts for following Google's changes. Watch it now!
How do search engines work?
Many search engines exist today, but in general they all work on the principles below:
- Crawling: Search engines collect all the data on websites across the internet by following links to a site and scanning its data.
- Index: Indexing is similar to the search engine's “registration process” for a website it has discovered and crawled. It usually runs in parallel with or after crawling. All the data the engine collects from the site is sorted and saved to its storage.
- Retrieval: When a query comes in, the web search engine scans and retrieves information most closely related to the query and with high popularity, then returns the results to the user.
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Doing SEO with just content and backlinks isn't enough. Google is smart now and evaluates user experience too. In this video Huy shows you how to do full-site CRO to reach the top with SEO in a really simple way, no tricks and no gimmicks, just understanding your customers.
The 6 most popular search engines today
Below are the most popular search engines today, ranked by number of users worldwide. Let's go through each search tool with MONA:
Google Search
Unsurprisingly, the name at the top of this list is Google Search, a search engine with 92.57% of the market share. The second, Bing, holds only 3.04%. According to real-time statistics, every second there are almost 65,000 searches on Google.

Google holds most of the world's search engine market
According to Statista and Statcounter data, Google dominates the market in every country and on every device, from desktops and mobile to tablets.
What makes Google the most popular search engine is the quality of its results. Google uses complex algorithms to show users the most accurate results and the best experience.
Google's founders, Larry Page and Sergey Brin, came up with the idea that websites referenced by many other pages are more important and so deserve to rank higher in search results.
Over the years, Google's ranking algorithm has gained hundreds of additional factors, including machine learning that lets bots read usage habits more easily and understand what people need. This helps Google return the most relevant search results.
Google has stated that its mission is to organize the world's information and make it universally accessible and useful. As a result, the search algorithm keeps getting more accurate and wider in scope. Because of this, Google SEO services has become hugely popular in most countries around the world.
SEO remains the most sustainable and effective marketing channel, with more than 90% of businesses worldwide treating SEO as core to their online strategy.
Kim Thành is the largest motorcycle parts business in Ho Chi Minh City, operating in an extremely competitive field. The MONA team went through the state of the website carefully with the client and built an SEO strategy that fit the company's actual situation.
Beyond full-scope SEO, MONA keeps up with Google's changes and applies the AI SEOstrategy, helping the Kim Thành website not only break out in search results but also appear prominently in AI tools.
Motorcycle parts brand grows traffic 2,500 times in just 5 months and drops Ads entirely
Result of the project: revenue up 400% and the Kim Thành brand is more visible than ever. Read the case study to see how we took the site to the top of Google.
SEO is not the shortest road to reaching and selling to customers, but it is the most sustainable, long-lasting and cost-efficient way to reach your business goals. If you need to raise brand awareness, widen reach, attract customer traffic and optimize revenue, MONA Media is ready to work with you. Call us today to get SEO services quote with full details.
Contact us via:
- Address: 1073/23 Cach Mang Thang Tam, Tan Son Nhat Ward, Ho Chi Minh City
- Hotline: 1900 636 648
- Email: info@themona.global
Baidu
Many people wonder which search engine people use in China, where Google isn't allowed. The answer is Baidu. And not only China: the US, South Korea and some other Asian countries use this search engine too.
Baidu is a search tool with a large user base thanks to its quality features. This online search engine was once said to have a network processing system 100 times that of the “king” Google. It also has a mobile version with features that help users quickly get important information, weather news and more.
Bing Search
Bing Search was formerly MSN Search (earlier also called Live Search and Windows Live Search), a search engine developed by the well-known Microsoft. It launched in 2009 and quickly “reach” became the second-largest search engine in the North American market.
Later, Microsoft and Yahoo Search reached a 10-year agreement under which Yahoo! Search would be replaced by Bing Search. Yahoo would receive 88% doanh thu of all search ads on its site for the first five years of the deal, and also had the right to sell ads on some Microsoft websites.
Yahoo!
Search tool Yahoo! Search was once a familiar name for the generation of internet users in Vietnam in the early years of getting online. But now Yahoo has almost vanished from its former “throne” with only about 5.5% of usage share worldwide.
Although it no longer holds the prominent position of Google or Bing, almost everyone knows Yahoo, and it still has a loyal, steady user base year after year. That's because Yahoo continues to deliver accurate, stable search results. It still returns the closest relevant results based on location and users' search habits. Yahoo's homepage also shows weather and your search trends.
However, what keeps many people with this search engine is probably the other useful services in the Yahoo ecosystem. Many people still use Yahoo Mail to send and receive email, and the Yahoo Answers community has plenty of people asking questions when they have a problem. Tumblr and Flickr, the well-known blogging and photo-sharing social platforms, are also Yahoo products.
Ask
Ask is now seen as a powerful, interesting and very distinctive search engine. Based on the popularity of links on the internet, Ask's algorithm ranks the topics most searched. As a result, users get more relevant, more useful results. The homepage, results page and other pages of this online search engine also carry very few ads and focus mainly on the user's search intent.
Naver
In Asian markets, Google is still the weaker player, trailing other search engines such as Baidu in China and Naver in South Korea. Naver is the most popular in South Korea and is the 8th-largest search engine in the world, with a market share of 0.12%.
Naver is built for South Korea, so it supports Korean-language search far better than Google. With a “huge” number of internet users in one of Asia's leading technology powers, only Naver can meet the demand. Naver is also developed as a web portal inside a large ecosystem, built to best fit the tastes of most Korean users.
On Naver's homepage you'll see a collection of popular news sources for users to catch up quickly. You can also browse top stories across many topics, from current affairs to economics, politics and entertainment. You'll also see the keywords trending most that day, to keep up with trends or follow important news such as natural disasters and accidents.
Above is the list of the most popular search engines available. today by number of users worldwide. That said, the popularity ranking depends on each country and community. In general, SEOers should also optimize for some search engines that aren't hugely popular worldwide but hold a sizable share and are well liked in places such as Vietnam, for example Cốc Cốc.
After this article, you should now understand what a search engine is. We hope the information and knowledge that MONA provides will help you understand popular web browsers and build the right strategy to improve your ranking and reach more potential customers. Good luck.
-> Read more:
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- A guide to building a website from A to Z for beginners
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