A cookie is a small text file that is stored by the computer when a website is visited by a user. The text stores information that the site is able to read in the moment in which it is seen at a later time. Some of these cookies are necessary for the proper operation of the site; others are useful to the visitor because they can safely store such information as the user name.
Google analytics is a web analytics service provided by Google Inc.
YouTube e Vimeo are two web platforms that enable viewing and sharing of videos on the internet