When talking about Internet Marketing and achieving better positions on the search results page, there are 2 words that are really the acronym in English of different processes, which are often confused or used as synonyms for Web Positioning.
The difference lies in the way in which this positioning is achieved in the Search Engines. SEO is the acronym in English of Search Engine Optimization, Optimization for Search Engines or Search Engines. This process deals with the natural way in which a Website appears on a Search Engine, also known as an "organic search".
The other process, known as SEM (Search Engine Marketing), is to get better places through sponsored links.
A company or business that is very clear about its market and that knows the needs of its customers very well is surely already in the top places in the Search Engines. However, it is essential to stay one step ahead of the competition and improve our score (ranking) in the Search Engines. This will increase the traffic of prospects and potential customers to our Website.