SEO stands for search engine optimisation, and people have made it sound complicated so they can charge you for the mystery. Here’s the plain version.
When someone searches Google, it shows the pages it thinks are the best answer. SEO is doing the work that makes Google think your page is the right answer: writing content people actually search for, making the site fast, and making sure Google can read everything on it.
It’s not magic and it’s not a once-off. It’s steady, sensible work — and it compounds. The site that starts ranking today is the one that gets found next month, for free, instead of paying per click.