Many small businesses credit SEM for attracting new customers. Depending on the competition in your business, relying on unpaid, organic Web traffic via SEO may leave your business far back in the rankings. By paying for SEM, you have more control over the specific keywords that will promote you, as well as where you will appear on the search results page.
Web analytics is the measurement of the behavior of visitors to a website. In a commercial context, it especially refers to the measurement of which aspects of the website work towards the business objectives of Internet marketing initiatives; for example, which landing pages encourage people to make a purchase. Notable vendors of web analytics software and services include Google Analytics, IBM Digital Analytics (formerly Coremetrics) and Adobe Omniture.