Search Engine Optimization, SEO, is a crucial part of any successful digital marketing. Mastering the art means that your business has greater chances of showing up at the top of the search engine results pages (SERP).While most search engine optimization tactics come and go with the frequent changes and updates in Google’s algorithm, some strategies have remained through the years. Here are four SEO strategies that have stood the test of time.1.) Keyword Research:Even though RankBrain has changed how keyword research is done, the practice itself remains a key part of search engine optimization. It’s only through keyword research that you are able to determine the right keywords to use to reach your target audiences. It reveals what the popular niche for your offerings is as well as the kind of topics that will help drive traffic to your website, effectively promoting your services or products.2.) Great Content:Content, which is the sum of the visual, textual, or even audio material on a site or the wider Wed, has always been touted as king. So Google has always purposed to serve internet users with the most relevant content for their search queries, even though some black hat SEOs have in the past been able to work around this and get poor quality content to rank.With Google updates such as Panda and Fred, content is now more important than ever. These algorithms strictly ensure that sites with thin content never make it to the top of the search engine results pages regardless of how hard the sites try.3.) Link Building:Search engines have always viewed links as votes in the Internet opinion poll. The more the links that point to a page the more likely it is to have something valuable for users, according to Google algorithm. If there is a day that this situation will change, that day has not yet come. Links continue to be the equivalent of votes that tell search engines how popular a web page is.An inbound link from another site is like a third-party vote, hence carries more weight than internal links in the eyes of search engines. This explains why Link Building Services remain critically important for any business that wishes to build high quality links and a successful SEO strategy.4.) The Use Of Schema Markup:Schema.org markup is that semantic vocabulary (code) that you add to your site’s code to tell search engines specific details about your website so that they can return more informative results for users.Since its inception, schema.org markup has always been essential in telling Google exactly where specific pieces of information, such as great content or website logo, is in the site. Businesses that use this strategy continue to see better performance in search, and that’s likely to remain unchanged in the foreseeable future.Wrap Up:Well, search engine optimization is, and will likely always be an important cog in the digital marketing engine. With a good mix of these timeless strategies and a host of new evolving ones, you should be able to get your business to rank at all times.