The title and the meta description are the two bits of text an engine tends to show for your page in a result. Get them right and more people click. Get them wrong and the engine rewrites them for you, usually worse.
The title tag is the single most important on page signal for what a page is about. Make it describe the page plainly, put the important words near the front, keep it to roughly 60 characters so it is not cut off, and make it unique across your site. Two pages with the same title tell an engine they might be the same page.
The meta description does not affect ranking, but it is your pitch in the result. Write it as one clear sentence or two that says what the reader will get, around 150 characters. Leave it blank and the engine pulls a snippet from the page, which is a gamble.
For AI answers both still help, because they are strong, early signals of what the page is about. Topkay's audit checks that each is present, a sensible length, and unique.