Being on the search engine means existing for the customer.
Indexing and positioning are the words that cannot be ignored on the Net.
Indexing was born well before the Net. «The first example is the Catalog of the library of Alexandria, thanks to the catalog the information was easily available and was not lost. This reasoning applies both to those who do ecommerce and to those who want to advertise a bed and breakfast or be found through google places.
Indexing on Google works on the basis of a rating algorithm called Pagerank, which is constantly updated.
Just make a little mistake and you disappear. For this we use the Seo (Search engine optimization) process. The variables are many and must be evaluated and studied based on the position of the site on the network to reach the peaks.