Evolution and History of SEO
Search engine optimization (SEO) is the process of affecting the visibility of a webpage or a website.
On-page optimization
In the search engine
optimization, on-page optimization refers to factors that have an effect on
Web site or Web page listing in a search results. These factors are
controlled by you or by coding on your page. Examples of on-page optimization
include actual HTML code, meta tags, keyword placement and keyword density.
Off-page optimization
In search engine optimization, off-page
optimization refers to factors that have an effect on the Web site or Web page
listing in natural search results. These factors are off-site in that they are
not controlled by you or the coding on your page. Examples of off-page
optimization include things such as link popularity and page rank
Search engine works
based on the following steps:
- crawling
- catching
- indexing
Crawling is the process of
crawling websites to get information about that website. After taking snapshot
it is saved in the database. This is done by web crawlers or spiders or robots.
Catching is fetching data
related to the website and storing it in the database.
Indexing is the process of
listing the fetched web pages. Web masters controls website related activities.
SEO
TYPES
• White Hat SEO
• Black Hat SEO
White Hat SEO is the ethical practice of optimizing web pages and the Black Hat SEO is the non-ethical practice of optimizing web pages.
EVOLUTION
Search
engines mainly works based on the algorithms. In olden days, search engines
were used which is based on the web page contents.These
contents are considered as keywords in a web page. Thus users started to
practice keyword stuffing like adding too many keywords in web page in order to
obtain high rank. The different types of keyword stuffing are adding keywords
in blank spaces and adding many keywords and making their pixel size small,
meta keyword tag which gives a brief description of web pages.
content
specific algorithm was replaced by link specific algorithm by making changes in
the algorithm. Those who have more links concerned to a website achieves high
rank so users tried to put more links in a web page which ultimately lead to
link selling. Thus google provide a quality link specific algorithms. Quality
of the page defines the page rank which can be a maximum of 10. Only few websites
achieved page rank 10 like US government
site etc.
Last
page rank updation was done on 2013. High page rank link selling was started to
practice by users so Google introduced passing juice external links that is SEO
link juice which means websites with high page ranks, if giving more links to
another websites then their page rank decreases automatically. Later
2016 April 10 the Google hide the page rank.
Nofollow links
In order to stop that equity passing Google
was introduced the new concept rel=”nofollow” in the links.
Eg:
<a href=www.sooftloom.com rel=”nofollow”>example</a>
Google
adwords and Google adsense
Google adwords is used for adding keywords in
advertisements. Pay-per-click is also called as cost per click which is defined
as a method of paying website owner on each click. Google adsense used by
website publishers for putting advertisements on web pages and earn money when
visitors click or view the add.
Panda
updated was done by google in
2011 to remove content spamming. It is also known as farmer updation. The main
types of content spamming are content duplication or content plagiarism, using
low quality contents with grammatical errors, publishing thinny pages with less
content, keyword stuffing, content spinning where paragraphs are spinned. Later 2014 the new versions of Panda was launched
to remove the content duplicated websites. And
it became permanent filter in algorithm. Web pages or sites which are on
threat are saved into sandbox where their ranking is at lower position.
Penguin updation was done by google in 2012
is related to removal of link spamming. The various types of link
spamming are link exchange, link selling, link farming, wiki spamming that is
obtaining links from Wikipedia after editing that content, low quality
directories, comment spamming. Guest blogging, adding links in an owners blog
by a guest user is also considered as spamming.
Hummingbird updation was done by google in 2013
is mainly done based on semantic updation. The defect of this updation
that can be wrong in certain cases. Rankbrain updation is the new version of
Hummingbird updation with more artificial intelligence and also a risky
updation. Google started to work automatically based on the users different
search queries and the mobile friendly updation was done to make website
responsive.
Pigeon updation is related to local SEO where
locally serviced ones need to do local SEO to get information about site on
local search
Pirated updation is copying the data of a
site into another one. According to Digital Millenium Copyright Act, we can
register complaints against this copying then Google takes necessary steps for
that
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