Domain Authority and Page Authority (DA/PA) are indicators developed by MOZ, a very respectable and reputable digital company, which predicts how well a page will rank in search engine results. The score for DA/PA is calculated algorithmically on a scale from 1 to 100.

To rank website domain authority consider that:
Scores between 40 and 50 are considered average. Domain Authority between 50 and 60 must be rated as good. Scores above 60 rate the Domain Authority as excellent.

Domain Authority is a search engine ranking score developed by Moz. It predicts how well a website will rank in search results.

Spam Score – Represents the percentage of sites with similar features we’ve found to be penalized or banned by Google

Spam Score of a website can be::
1-30% – low
31-60% – medium
61-100% – high

Search engines perform several activities in order to deliver search results.

 Crawling – Process of fetching all the web pages linked to a website. This task is
performed by a software called a crawler or a spider (or Googlebot, in case of
Google).

 Indexing – Process of creating index for all the fetched web pages and keeping
them into a giant database from where it can later be retrieved. Essentially, the
process of indexing is identifying the words and expressions that best describe the
page and assigning the page to particular keywords.

 Processing – When a search request comes, the search engine processes it, i.e.,
it compares the search string in the search request with the indexed pages in the
database.

 Calculating Relevancy – It is likely that more than one page contains the search
string, so the search engine starts calculating the relevancy of each of the pages
in its index to the search string.

 Retrieving Results – The last step in search engine activities is retrieving the best matched results.

Basically, it is nothing more than simply displaying them in the browser. Search engines such as Google and Yahoo! often update their relevancy algorithm dozens of times per month. When you see changes in your rankings, it is due to an algorithmic shift or something else beyond your control.

Robots.txt is a text file used by websites to communicate with web crawlers (like search engines) and other web robots. It provides instructions on which parts of the website should be crawled, indexed, or ignored.

The file is usually placed in the root directory of a website and contains directives like: –

Allow: specifies pages or directories that can be crawled –

Disallow: specifies pages or directories that should be ignored – User-agent: specifies which crawlers the directives apply to

Robots.txt helps website owners control how their content is accessed and indexed, and it’s an important tool for search engine optimization (SEO) and website management.

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