Which promotion tactics bring the best results for websites

Hello everyone,

I would like to ask for your opinions and experiences regarding website promotion. Nowadays there are so many different options available SEO, social media marketing, paid ads, influencer collaborations, link building, content marketing, newsletters, etc.

In your experience, which promotional methods are the most effective and efficient in terms of both time and costs? Do some strategies work better for new websites compared to already established ones?

Id really appreciate hearing your insights, case studies, or even personal tips on what brings the best results in promoting websites.

Thanks in advance!