Link building is a very risky strategy. You can easily burn your hands if you do not understand what you are doing. On the other hand, learned decisions, planning and earning links, always keeping in mind E-A-T (Expertise, Authoritativeness, Trustworthiness) and other Google guidelines can help your content with PageRank and then stay on top of search results for a much longer period
Having a fast loading site is crucial these days. It is a considered a very strong ranking signal by search engines and with Google recommendations for a page load speed to be 2 seconds or less, this something we cannot avoid.
We recently added Structured data to our article pages on our website. It's 2019 And Structured Data Is Crucial For SEO. If you are looking to implement Jason-LD formatted data in structured format, this can help.