Difference Between Crawler, Spider And Robot

A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web, typically for the purpose of indexing.

Web search engines and some other sites use Web crawling or spidering software to update their web content or indices of others sites' web content. Web crawlers copy pages for processing by a search engine which indexes the downloaded pages so users can search more efficiently.

Mechanisms exist for public sites not wishing to be crawled to make this known to the crawling agent. For example, including a robots.txt file can request bots to index only parts of a website, or nothing at all.

Best SEO Tips for beginners

Search engine operates mainly two major functions:

1.Crawling and Indexing

           Crawling and indexing the billions of documents, pages, files, news, videos, and media on the World Wide Web.

2.Providing answers of  related Search query :
           The search engine does two things:It is both relevance and popularity that the process of SEO.

How people use search engine ? 

Three types of search queries people generally make:
  1."Do" Transactional Queries: I want to do something
  2."Know" Informational Queries: I need information
  3."Go" Navigation Queries: I want to go to a particular place on the Internet, such as Facebook

Sarch Engine Marketing:

An important aspect of SEO is making your website easy for both users and search engine robots to understand. The search engines' primary responsibility is to serve relevant results to their users.