Search engine optimization and search engine marketing are two terms that tend to get used interchangeably, but the two terms have very different meanings. In fact, the two terms often are argued upon considerably within the online community, with lots of differing opinions on how exactly to define them.

Search engine optimization (SEO) is actually a component of search engine marketing whilst Search engine marketing (SEM) is the process of marketing a website via Internet search engines; whether by improving rank in organic or natural listings, paid or sponsored listings or a combination thereof.

SEO & SEM are for two different purposes. SEO is for getting higher rankings on search engine results while SEM is for targeting the traffic of the search engine viability.

In Short,
seo is free and long term process.
sem is paid and short term process.

SEM differs from SEO in the reality that SEM is a paid assistance and can allow near quick effects, while SEO is a additional long-term, natural approach, and can bring time to earn the better search engine rankings you are after.

Renustech wrote:SEM differs from SEO in the reality that SEM is a paid assistance and can allow near quick effects, while SEO is a additional long-term, natural approach, and can bring time to earn the better search engine rankings you are after.

yes .. you replied in a good way...

my vote for seo coz its free and long term process