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Google defines duplicate content as a big block of content that is the same in different pages of the same domain. Duplicate content can be dangerous and is not a good practice in terms of SEO and organic results on search engines. Google understands there are two different pages with the exact same content online. In order to avoid all these situations, it’s important to pay attention to the best practices for 2020 as explained in here. The best practices listed in this text are that websites with these practices may suffer penalties and not be well ranked on Google.