Some of the mentioned items aren’t necessarily new in 2018, but are still either part of Google’s core algorithms, or just useful knowledge to have in the world of SEO. Refresh your knowledge on the top 3 ranking factors for Google Search: Backlinks, Content, and Rankbrain.
Some of these terms are hotly debated in relation to their importance for SEO, such as Latent Semantic Indexing, as well as Query Deserves Freshness, which has multiple different sources and schools of thought. The biggest news this year for SEO has been Mobile First Indexing – Google now crawls the mobile version of your website for indexing and ranking. Having a mobile friendly website is now no longer a sidenote in 2018.
Infographic Source: https://www.digitalmeal.com.au/blog/the-a-z-of-seo-in-2018/