SEM Search engine marketing (SEM) refers to a type of online marketing where websites are promoted by boosting their visibility in search engine results pages (SERPs) through paid advertising. If your website is not ranking well for your business, services, or product keywords on search engines, or if you are running a campaign that requires immediate traffic to your site, then paid advertising is the quick and instant solution you should consider. Paid search marketing or paid advertising offers an unparalleled opportunity for your business to reach a targeted audience who are specifically interested in relevant and specific information.