Many people often ask us which is the SEM and differences between the SEM and SEO. The SEM means Search Engine Marketing. The main goal of SEM is to get visitors to websites through PPC or pay-per-click. The SEO or Search Engine Optimization means to optimize website to get to the highest position of search engines such as Google.
AdWords is the Google's platform of PPC or pay per click. Google AdWords remains the most popular platform, people often confuse the SEM with the sole management of AdWords ignoring that Bing, for instance, also offers this service.
We enclose a Google video of how to manage an AdWords campaign properly and functioning.