What do you do for SEO?

Render what I can on the server (SSR with progressive enhancement), have a good Lighthouse score, but more importantly I'm not using tricks for SEO. If you have genuine, organic content people care about, a good UX with good TTI (time to interactive) and accessibility (WCAG recommendations) you should rank adequately eventually, or it's Google's loss for not showing what people want to see. Tricks become useless after a while, relationships are forever. Part of that is being everywhere on social media so people can find you. We live in an attention economy, so you have to be concise enough for people to be able to understand what you can do for them in a glance.