From the literal meaning: SEO stands for Search Engine Optimization. It refers to the process of increasing a website's weight in search engines (including but not limited to improving "keyword" rankings) by understanding how search engines crawl web pages and rank them.
In terms of the current situation: For the vast majority of small and medium-sized enterprises, 80% or more of their website traffic comes from search engines. To achieve better rankings in search engines, one method is paid bidding ranking, while another very effective way is SEO. SEO and bidding ranking each have their own advantages. In the long term, the effectiveness of SEO is stronger, although it requires more time to operate. The overall effect of SEO is very good, with a very high cost-performance ratio. With bidding ranking, payment will bring traffic more quickly.
Essentially: SEO is part of online marketing. Due to the constant competition of information on the Internet, SEO has become an indispensable part.
In terms of effectiveness: The most obvious effect of SEO is reflected in the improvement of rankings in search results and the increase in website traffic. The frequency at which a website is crawled by search engines will also increase (SEO is a form of online marketing that allows a website to gain more potential customers, a way for a website to acquire more potential customers from Baidu and other search engines. by-kyw).