SEO and SEA, Search Engine Optimisation and Search Engine Advertising are responsible for being found. A good SEO serves your website the first places for specific keywords or several results on the first places.
"Search engine optimization (SEO) is the process of affecting the visibility of a website or a web page in a search engine's unpaid results - often referred to as "natural," "organic," or "earned" results. In general, the earlier (or higher ranked on the search results page), and more frequently a site appears in the search results list, the more visitors it will receive from the search engine's users. SEO may target different kinds of search, including image search, local search, video search, academic search, news search and industry-specific vertical search engines.
As an Internet marketing strategy, SEO considers how search engines work, what people search for, the actual search terms or keywords typed into search engines and which search engines are preferred by their targeted audience. Optimizing a website may involve editing its content, HTML and associated coding to both increase its relevance to specific keywords and to remove barriers to the indexing activities of search engines. Promoting a site to increase the number of backlinks, or inbound links, is another SEO tactic."
Source: Search engine optimization. (2015, September 22). In Wikipedia, The Free Encyclopedia. Retrieved 16:37, October 21, 2015, from https://en.wikipedia.org/w/index.php?title=Search_engine_optimization&oldid=682216743
Search engine advertising (SEA) is the "paid version" of being found. It is buying clicks per keyword. SEA is useful for short term success.
We offer in general SEO and optimise the websites so, that they rise in the top places for the relevant keywords and stay there. Therefore we deeply optimise websites and do also off-site optimisation.