Google's search engine works through a process of crawling websites to index their content, then ranking the indexed pages based on relevance to return the most pertinent results when a user searches. It starts by having Googlebot crawl and index new or updated pages, then analyzes content to understand what each page is about and stores this in its massive database. When a user searches, Google's index machines return results deemed most relevant based on many factors, providing search results in nanoseconds.

1. HOW DOES GOOGLE
SEARCH ENGINE WORK?
PRESENTED BY HAMNA GUL

2. INTRODUCTION
• Without a doubt, Google Search Engine
is the most trusted Search Engine and
the most widely used.
• It was created in 1998 by Larry Page
and Sergey Brin.
• Through Google Search Engine, the
whole world is just one click away.
• Google handles over 3.5 billion searches
per day.
• With the passage of time, It has
increased its capacity and took many
areas of life into its fold.
GOOGLE IN 1998
GOOGLE IN 2022

3. STAGES OF SEARCH ALGORITHM
Google Search Algorithm is the process through
which Google provides the Information to the
user. It happens through the following stages:
CRAWLING
INDEXIN
RANKING
1. CRAWLING
2. INDEXING
3. RANKING

4. CRAWLING
 Crawling is the process by which Googlebot (a program) visits
new and updated pages to be added to the Google Index.
 New Sites, changes to existing sites, and dead links are noted
and used to update the Google Index.

5. INDEXING
 The process of analyzing the content, images and video
files in the page, trying to understand what the page is
about.
 All this information is stored in the Google Index, a huge
database that is stored on many computers
(supercomputers).

6. RANKING:
 When a user enters a query, Google index
machines search the index for matching
pages and return the results that are believed
to be the most relevant to the user.
 The relevancy is determined by many factors.

7. THE PROCESS OF SEARCHING
 First, the User write down the name of the thing that he wants to get information about. He puts the words in
search bar.
 Secondly, Googlebot starts to search through index and collect information matching the requited information.
Googlebot collects the data. This step highly depends upon various factors e.g. Location, personal Information
provided to Google by the user etc.
 Thirdly, Google rank or arrange the information into proper categories, so that the most relevant information
would be on top.
 Fourthly, Google provides and shows us the information on the homepage where we select from the websites. All
this is done in a span of nanoseconds.

8. Input by user in
the Search Bar
Gathering of
Information
Ranking
Information shown
on homepage