1. SEO: Search Engine Optimization, Refers to the internal and external adjustment and optimization of the website based on understanding the natural ranking mechanism of the search engine, and improving the natural ranking of keywords in the search engine. Get more traffic to achieve the goal of website sales and brand building ;
2. SEM: Search Engine Marketing, Refers to the promotion of websites on search engines, improve the visibility of the website, and thus bring traffic to the network marketing Activities;
3. SEM includes SEO, PPC (Pay Per Click, ie pay-per-click, such as Google bidding, etc.), paid login, etc., of which SEO and PPC are the most common.
4. Both SEO and SEM have the same purpose, both for website sales and brand building ; the difference is the implementation method: SEO is to obtain a good natural ranking through technical means; SEM can be through technical means (SEO) and payment means ( PPC), etc.