Difference between SEO and SEM

SEO (Search Engine Optimization) is dealing with natural (organic, algorithmic) results in various search engines. Its main goal is to achieve high rankings in search engine result pages (SERP’s) for targeted keyword or key phrases. High positions will bring traffic to the site and possibly turn visitors into customers.

SEO is long process, you can not do seo in 5 minutes. It’s constant process, evolving with time thought analysis, changing market and competition. It takes time to establish a brand, gain inbound links, trust and targeted traffic to the website. But the outcome of seo process is long lasting, or at least should be.

SEM (Search Engine Marketing) on the other hand is a greater sphere than seo. SEM consists of SEO, paid placement (PPC) and paid inclusion.

In some cases you have to pay to be included in search engines indexes or pay for showing your ad in the ad network based on click value (Pay-Per-Click) or other method.

SEM incorporates various Internet marketing techniques which use search engines as an advertising medium.

In general:
SEM = SEO + PPC

Good understanding and differentiation between SEM and SEO might

SEO is promoting your website in search engines while SMM is new trend in getting traffic which you need to promote your website in social media..

thanks a lot for sharing the difference b/w the two very helpful post for the beginners

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Very nice article! This is very much true that SEO takes time and you can't get results in days or weeks. If it is done constantly you will get good results but waiting for some time. This time will depend upon the keyword yuo are promoting for!