Search Engine Optimization (SEO)
Search engine optimisation is the craft of making a website show up when someone types words related to your business into a search box. Not paying for a position — earning one. An entire industry has been built on it since the late nineties, and most of what people mean by "getting found online" is still this.
The work splits in two. There is the half you control: what your pages say, how clearly they say it, how quickly they load, whether the structure of the site makes sense to a machine reading it. And there is the half you do not: whether other sites point at yours, mention you, treat you as worth citing. The first half is craft. The second is reputation, and it is slower.
None of this has stopped working. Search engines still exist, still send visitors, still reward a well-made site. A business that invested in SEO and looks at its numbers today will usually see nothing alarming at all, which is exactly what makes the present moment confusing.
What has changed is what sits on the other end of the work. SEO wins you a place in a list. It says nothing about whether an AI assistant, asked the same question in plain language, will name you in its answer. Those are different competitions with different rules, and a site can win the first while losing the second without any warning that it is happening. Ranking first in a list that fewer people read each year is a smaller prize than it used to be.