In short, it is the text that appears in the hyperlink.
Meaning, if we have a text and we see a word phrase either underlined or usually in blue (what indicated that it is a link) – that text is the anchor text.
The anchor text here would be “getting more reviews”.
Anchor text and SEO
Back in the day, SEOers used to abuse Google by purchasing spammy links and using the same anchor text over and over again. At some point, Google’s algorithm started identifying the systematic strategy and soon the Google Penguin update was rolled out and it targeted many spammy or identical anchor texts, along with other spammy elements.
Today it will be considered a good practice to use varied anchor text and not to stick to a single, identical phrase.