¿Qué es SEM y cuál es mejor, SEM o SEO?

¿Qué es SEM y cuál es mejor, SEM o SEO?

SEM OR SEO? When you have created your web page, be it personal or business, you will need to make it visible, so that more people who type certain words in the search engine, have a greater probability of finding your site on the internet at the suggestion of the...