As of my knowledge here are some SEO trends that were relevant and likely to continue in the current era:
Mobile Optimization: With the increasing use of smartphones and tablets, it's more important than ever to ensure that your website is optimized for mobile devices.
Voice Search: As voice search continues to grow in popularity, optimizing your website for long-tail keywords and natural language queries is becoming increasingly important.
Local SEO: With the rise of "near me" searches, local SEO has become more important than ever. This includes optimizing for local keywords, creating Google My Business listings, and building local citations.
Content Quality: Google's algorithms are increasingly focused on providing high-quality content to users. This means that creating valuable, well-researched content is more important than ever.
User Experience: User experience is becoming an increasingly important ranking factor for Google. This means that optimizing for site speed, mobile-friendliness, and other user experience factors can help improve your search engine rankings.
Featured Snippets: Google's featured snippets provide users with quick answers to their questions. Optimizing your content to appear in featured snippets can help drive more traffic to your website.
Artificial Intelligence: Google's AI algorithms are becoming increasingly sophisticated, which means that SEO strategies focused on machine learning, natural language processing, and other AI-driven techniques are likely to become more important in the future.
It's important to note that SEO trends can change rapidly, so it's essential to stay up-to-date with the latest best practices and strategies to ensure that your website remains competitive in the search engine rankings.