When you search for something in Google (or some other search engine), an algorithm works progressively to bring you what that web crawler considers as the "best" result.
In particular, Google examines its list of "several billions" of pages to locate a lot of results that will best answer your search.
Despite the fact that Google doesn't make the inward activities of its algorithm open, in light of recorded licenses and explanations from Google, the sites and pages are positioned dependent on the relevancy, authority and usefulness.
Google Algorithms in SEO
Google's algorithms are an intricate framework used to recover information from its search index and deliver the best possible results for a query. A combination of algorithms and various ranking signals are used by the search engines to deliver web pages ranked by relevance on its search engine results pages (SERPs).
Most of these updates are slight to such an extent that they go totally unnoticed. But sometimes the search engine takes off major algorithmic updates that significantly impact the SERPs such as:
• Intrusive Interstitials Update
• EMD (Exact Match Domain)
• Page Layout Algorithm
In its initial years, Google just made a bunch of updates to its algorithms. Presently, Google takes off algorithm updates on more than one occasion each month (and that is only the ones we think about!), however not every one of them has a similarly solid effect on the SERPs.
With every algorithm change, some level of sites has gained in popularity, while others lose. Sporadically, even real locales endure a tremendous shot, drawing 10 million page views one day and 5 million the day after an algorithm change.