Google PageRank algorithm takes into consideration the sources and the number of web page backlinks, then estimates the importance of that page. That is why when you try to search for some goods, information or service, Google and other search engines present website links in a concrete order (from the most valuable to the least important ones). Backlinks help your website attract a primary audience.
For Search Engines, backlinks help to determine the page’s importance and value (i.e. authority). Historically, the quantity of backlinks was an indicator of a page’s popularity. Today, due to the way backlinks are evaluated based on different industry-related ranking factors, it is less quantity focused and more about the quality of sites from which the links are coming.
Since heading tags typically make text contained in them larger than normal text on the page, this is a visual cue to users that this text is important and could help them understand something about the type of content underneath the heading text. Multiple heading sizes used in order create a hierarchical structure for your content, making it easier for users to navigate through your document.
Digital marketing became more sophisticated in the 2000s and the 2010s, when the proliferation of devices' capable of accessing digital media led to sudden growth. Statistics produced in 2012 and 2013 showed that digital marketing was still growing. With the development of social media in the 2000s, such as LinkedIn, Facebook, YouTube and Twitter, consumers became highly dependent on digital electronics in daily lives. Therefore, they expected a seamless user experience across different channels for searching product's information. The change of customer behavior improved the diversification of marketing technology.
Jure Klepic wrote a great article about Influencers and Advocates. He’s touched on a marketing debate that is raging between the efficacy of advocates and influencers. The truth is both matter – but either may matter more than the other depending on context. For example, new start-ups rarely have advocates – but most can connect with influencers in the industry. In that situation, clearly influencers are more important.
Getting unique and authoritative links is crucial for higher ranking in the SERPs and improving your SEO. Google's algorithm on evaluation of links evolved in recent years creating a more challenging process now to get high quality backlinks. External links still matter and aren’t obsolete, so start working on strategies to get valuable backlinks to improve your search visibility.