SEM comprises most of the techniques of SEO as a part of it. SEM includes strategies based on Paid online ad-models such as pay-per-click(PPC). Google AdWords and Bing are some of the models which come under PPC advertising and they require payment only when ad is clicked by particular target audience.
Keywords analysis of the words and phrases is one of the very important aspect for PPC on which ODMI primarily concentrates on. Moving ahead, ODMI also focuses on the fact that the ad and the website need to be insightfully monitored to analyze the response and alter the strategy as per the search engine protocols.