What is Googlebot in SEO ?

What is Googlebot in SEO ?

Googlebot is the search bot software used by Google to index a webpage. Crawling, Caching and indexing of a webpage happen through this Googlebot by collecting details from that webpage.
 
It is a program used by google to collect information from the web to create a searchable index for the purpose of giving related information for the searchers.
 
You should also be aware that Google purposefully tries to make it's bots undetectable and/or blend in with regular user traffic. This is to thwart spammers who would try to serve different landing pages to Google's bot vs. a regular human. In the past they would attempt to serve hundreds of thousands of spammy, over-optimized, auto-generated pages to it's bots in an effort to rank better.

As a result, some third party tracking solutions, and especially home-grown tracking solutions, can often get screwed up by this and report inflated traffic numbers whenever Google's bot spiders their sites. One particular instance where I have seen this happen a lot is when a user sets up a new AdWords campaign. By default, Google will send bot traffic to the designated landing pages, coming from all the keywords in the campaign. So if you added 100 keywords, and 5 ads to a campaign, you may get about 500 bot visits to your site. Google is checking the relevancy of the keywords in your account to the landing page you are sending them to.
 
Googlebot is the search bot software (google serch algorithm) used by Google to index a webpage and Crawling, Caching and indexing of a webpage happen through this Googlebot by collecting details from that webpage.
 
Googlebot is Google search bot that crawls the web and creates an index. It is also known as a spider. The bot ramp each page, it is allowed access to, and adds it to the index where it can be accessed and returned by users of search queries.
 
Googlebot is the search bot software used by Google, which collects documents from the web to build a searchable index for the Google Search engine.

If a webmaster wishes to restrict the information on their site available to a Googlebot, or another well-behaved spider, they can do so with the appropriate directives in a robots.txt file,or by adding the meta tag <meta name="Googlebot" content="nofollow" /> to the web page.[1] Googlebot requests to Web servers are identifiable by a user-agent string containing "Googlebot" and a host address containing "googlebot.com".

Currently, Googlebot follows HREF links and SRC links.[1] There is increasing evidence Googlebot can execute JavaScript and parse content generated by Ajax calls as well. There are many theories regarding how advanced Googlebot's ability is to process JavaScript, with opinions ranging from minimal ability derived from custom interpreters. Googlebot discovers pages by harvesting all the links on every page it finds. It then follows these links to other web pages. New web pages must be linked to from other known pages on the web in order to be crawled and indexed or manually submitted by the webmaster.

A problem which webmasters have often noted with the Googlebot is that it takes up an enormous amount of bandwidth.[citation needed] This can cause websites to exceed their bandwidth limit and be taken down temporarily. This is especially troublesome for mirror sites which host many gigabytes of data. Google provides "Webmaster Tools" that allow website owners to throttle the crawl rate
 
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