The Penguin algorithm is a search engine algorithm that reduces the rank of the websites that violate the SEO guidelines. Websites that practice malicious ways to improve ranking, like buying links, keyword stuffing, and more, get deprioritized on the search engine results page.
The Penguin algorithm is important for SEO as it promotes natural and ethical link building. The websites start focusing on high-quality and relevant content to earn backlinks organically. It encourages the websites to prioritize genuine engagement practices over quick and unethical seo hacks.