The major difference between SEO and SEM has been that SEO (search engine optimization) is an integral part of SEM (search engine marketing). The latter is also popularly known as Search marketing. Both the processes have a similar objective. They both strive to increase the visibility of your site in popular search engines. SEO has been all about optimizing the web properly. It would help you gain relatively good rank in the search engine results. On the other hand, SEM goes past SEO. It would entail various methods to help you gain additional search engine visitors such as PPC advertising. To understand SEO VS SEM in China, read on.
Search Engine Optimization
SEO has been the process of optimizing the site in order to receive free traffic from various search engines. Search engine crawlers would more easily understand an optimized website. Therefore, there would be improved chances of ranking higher in SERPS.
Two major aspects of SEO
The two major aspects of SEO have been on-site SEO and off-site SEO. On-site SEO entail rules for your website to make it more search engine friendly. You would require using proper titles, decently formatted URLs, good descriptions, appropriate usage of images, H1 and H2 etc. You could also make use of various other tips for optimizing your site to be found in top ranks of search engines.
Off-site SEO implies the process of gaining votes from several sites in order to gain trust for your website with popular search engines. It might be confusing for beginners. However, you should take it as a ranking system where the site gaining more votes would apparently rank higher. The votes here would be links coming from other websites on to your website. This has been the major reason whereby off-site SEO has been popularly referred to link building.
Search Engine Marketing
SEM has been beyond SEO. However, it has been the only subset of all kinds of online marketing strategies. Several other ways could be used for gaining excessive traffic to your website apart from SEM and SEO. Therefore, SEM has been a marketing process having an aim of gaining online presence in search engines. It would be done wither by gaining paid traffic or free traffic.
SEM traffic and its wide importance
SEM traffic has been a huge source of online traffic, as it has been targeted. People make use of search engines to find answers to various problems. When the list of results appears, the ad you click on would convert into money. It has been the relevancy of advertisements and websites that makes SEM traffic largely important.