what is seo:-
SEO stands for Search Engine Optimization. It is a process designed to optimize a website for search engines. It helps websites achieve higher ranking in search engine results when people search for keywords related to their products and services. Thus, it increases the quantity and quality of traffic to a website through organic search engine results. See the following image to understand the basic activities involved in the SEO.
What is a SERP feature?
A SERP feature is any result on a Google Search Engine Results Page (SERP) that is not a traditional organic result. The most common SERP Features are:
- Rich Snippets which add a visual layer to an existing result (e.g., review stars for product ratings)
- Paid Results that are bought by bidding on keywords (e.g., AdWords or Google Shopping)
- Universal Results that appear in addition to organic results (e.g., image results, new results, featured snippets)
- Knowledge Graph data which appears as panels or boxes (e.g., weather, Celebrity Knowledge Panel)
What is Domain:-Domain name is the identity of one or more IP addresses, i.e. the domain name google.com points to the IP address "74.125.127.147". It is easy to remember a name rather than a long string of numbers.Domain Authority:-
Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how well awebsite will rank on search engine result pages (SERPs). A Domain Authority score ranges from one to 100, with higher scores corresponding to a greater ability to rank.
Types of SEO:-(1) White Hat SEO
It alludes to the SEO systems which are not as per the SEO rules set by the web crawlers. These procedures abuse the shortcomings in web crawlers to get higher rankings for sites on the internet searcher results pages (SERP).
It primarily centers around web indexes and not on the human gathering of people. Individuals who are searching for a fast money related profit for their site instead of long haul speculation utilize white hat SEO strategies.
(2)Black Hat SEO
It alludes to the SEO systems which are not as per the SEO rules set by the web crawlers. These procedures abuse the shortcomings in web crawlers to get higher rankings for sites on the internet searcher results pages (SERP).
It primarily centers around web indexes and not on the human gathering of people. Individuals who are searching for a fast money related profit for their site instead of long haul speculation utilize SEO black hat strategies.
 How Search Engine Works:-
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(1) Crawling:
The web indexes have the web crawler or creepy crawlies to perform slithering. The undertaking of a crawler is to visit a page, read it and pursue the connections to other pages of the site. Each time the crawler visits a website page it makes a duplicate of the page and adds its URL to the record. In the wake of including the URL, it routinely visits the destinations like each month or two to search for updates or changes.
(2) Indexing:
In this stage, the crawler makes the file of the web index. The list resembles an immense book which contains a duplicate of each website page found by the crawler. In the event that any site page changes the crawler refreshes the book with a new substance.
Along these lines, the record includes URL of various website pages visited by the crawler and contains the data gathered by the crawler. This data is utilized via web crawlers to give important responses to clients for their inquiries. On the off chance that a page isn't added to the file, it won't be accessible to the clients.
(3) Ranking:
Rankings. Rankings in SEO alludes to a site's situation in the internet searcher results page. There are different positioning elements that impact whether a site seems higher on the SERP dependent on the substance importance to the pursuit term, or the nature of backlinks indicating the page.
Google Algorithm Updates:
In the first place, in the '90s, web search tools were not as viable as it is today; it was essentially centered around watchword coordinating and backlinks. Along these lines, it was very simple for the low-quality sites to rank higher by focusing on their careful catchphrases with loads of backlinks.
To tackle this issue, Google acquainted a calculation with the channel the outcomes so it could clean the web. From that point forward Google is consistently refreshing its calculation to keep up and improve the effectiveness of its web crawler.
Some of the major Google updates which helped it filter sites more precisely and clean the web effectively are given below:
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