It is well known by now that Google has said site speed is a small ranking factor (about 1%). This is tiny, but it’s rare for Google to say that anything has a definite effect on rankings. So it makes so much sense to follow this advice. Plus, users love fast and responsive sites. They will feel more in control of their experience, consume your amazing content more efficiently and convert better.
Having large groups of content that all revolve around the same topic will build more relevance around keywords that you're trying to rank for within these topics, and it makes it much easier for Google to associate your content with specific topics. Not only that, but it makes it much easier to interlink between your content, pushing more internal links through your website.
Keywords research is a very important process for search engine optimization as it can tell you the exact phrases people are using to search on Google. Whenever you write a new blog post, you have to check the most popular keywords, but don’t be obsessed by the search volume. Sometimes, long tail keywords are more valuable, and you can rank for them more easily. How to Get More Organic Traffic Right Now (0 - 15k Visits in 30 Days)