SEO: Search
Engine Optimization, is to understand the search engine in the natural ranking
mechanism based on the site for internal and external adjustment and
optimization to improve the site in the search engine keyword natural ranking,
Get more traffic, so as to achieve the goal of website sales and brand
building;
SEM: Search
Engine Marketing is to promote the site in the search engine, improve site
visibility, resulting in traffic to the network marketing activities;
SEM including SEO, PPC (Pay Per Click, that is, pay-per-click,), paid login and other forms, of which the most common SEO and PPC.
SEO and SEM the main difference is the ultimate goal of the different: SEO is mainly for the keyword ranking, site traffic, site structure, search engine pages included in the data;
SEM is based on the SEO technology based on the expansion of the commercial value of the search engine, planning an effective network marketing program, including a series of web site operations strategy analysis, and implementation, the marketing effect of detection.
Search Engine Marketing: we usually referred to as SEM. Search engine marketing is the basic idea is to allow users to find information, and through the (search engine) search click into the site / page to learn more about the information he needs. In the introduction of search engine strategy, it is generally believed that the main goal of search engine optimization design has two levels: the search engine included in the search results and ranking.
SEO purposes for search engines and get a good ranking, SEM to guide the user to find, search. SEM develop from the SEO.
