I completely agree that defintion of a target audience isa great first step, but would ask if adding in competitors to the analysis (mentioned here as a later step) helps draw out who your target audience would be via comparisons, i.e. showing who you are an who you are not - would be very interested to hear opinions on how this tactic can be used within the overall step in coordination with targeted keyword discovery.
For example, we regularly create content on the topic of "SEO," but it's still very difficult to rank well on Google for such a popular topic on this acronym alone. We also risk competing with our own content by creating multiple pages that are all targeting the exact same keyword -- and potentially the same search engine results page (SERP). Therefore, we also create content on conducting keyword research, optimizing images for search engines, creating an SEO strategy (which you're reading right now), and other subtopics within SEO.
Thanks for your 2019 tips. As a startup business I’m researching heavily on all SEO matters and you’re giving me the confidence to succeed. Just one question if I may. I’m creating a platform that will have 50,000 pages… As it’s practically impossible to create backlinks to all individual pages, do backlinks count from the domain, for example blog posts. Thanks, Matt