Have a basic understanding of semantic writing having done content writing years ago. However, as a developer currently looking to learn to market some tech adj

Have a basic understanding of semantic writing having done content writing years ago. However, as a developer currently looking to learn to market some tech adjacent ( ecomm software) ideas by writing a blog. I was under the impression that back link building was the primary driving factor towards good SEO? Is there anything you'd suggest to get started writing? I was looking to build an audience before starting a software project. Thanks