Here are some fundamental principles that are likely to remain relevant for a while:

  1. Relevance: Ensure your content is relevant to the keywords you want to rank for and provide value to users.

  2. Keyword Optimization: Incorporate relevant keywords into your content and meta tags, but avoid keyword stuffing.

  3. Content Quality: High-quality, original, and informative content is key to improving search engine rankings.

  4. Link Building: Acquire high-quality backlinks from reputable sources to demonstrate the authority of your website to search engines.

  5. Mobile Optimization: With more users accessing the web from mobile devices, it's crucial to have a mobile-friendly website.

  6. Site Structure: A well-organized and easy-to-use website structure helps search engines understand the hierarchy and relevancy of your content.

  7. Page Speed: Faster page speeds lead to better user experiences and can positively impact search engine rankings.

Remember that SEO is a long-term strategy and the results are not immediate. It requires a consistent effort over time to see results.