The term "Search Engine Marketing" was proposed by Danny Sullivan in 2001, which covers a spectrum of activities involved in performing SEO, managing paid listings at the search engines, submitting sites to directories, and developing online marketing strategies for various business setups, organizations, and individuals. Today the need of a good and competitive website is indispensable as it represents the client's company and influences the customer psychology. An SEM agency aims to improve the ranking of a client's website in the search engine listing. The design concepts are mainly targeted towards making the website more search friendly, user friendly and easy to navigate.

SEM is often defined as the practice of buying paid search listings with the goal of obtaining better free search listings. Some of the important SEM methods used are: Search Engine Optimization, Paid Placement and Paid inclusion.

Search engine optimization is a vital service offered by these agencies. They employ experts, who have multiple skills and talents in online content, web designing, link development, programming effective coding and analysis skills. Similarly, there is an expert team for link development who are mainly content writers, who categorize the search involved with a directory listing. They write appropriate descriptions that enhance a site's overall engine visibility providing an accurate directory description. Apart from SEO services they also provide various online advertising services, design SEO friendly content pages to make sure guaranteed results et al.

A well implemented SEM campaign can have a profound impact on your entire Internet marketing campaign. It will drive traffic to your website by helping you reach a lot of potential consumers from around the globe and create awareness about your business which will subsequently lead to increase in sales and thus boosting revenues. This will help you to expand your business operations in regions where are yet not known to you.

All in all, your success in the arena of online advertising depends largely on how well an Search Engine Marketing agency designs and implements your business campaign.