Search Engine Optimization (SEO) is the practice of improving the visibility and ranking of a website or a web page in search engine results pages (SERPs) through the use of various techniques and strategies. SEO is essential for businesses of all sizes, as it helps them to reach out to a wider audience, increase their online visibility, and ultimately, generate more revenue. Types of SEO. SEO can be broadly divided into two categories: on-page and off-page SEO. On-page SEO refers to the various techniques and strategies used to optimize individual web pages in order to rank higher and earn more relevant traffic in search engines. Some of the most important on-page SEO elements include keyword research and optimization, content optimization, meta tags, image optimization, and URL structure. Off-page SEO , on the other hand, refers to the various techniques and strategies used to improve the visibility and ranking of a website or a web page through external factors, such as link b...