1. Web 1.0, web 2.0 and web 3.0

Web 1.0.

In the 1990´s,information on the Internet was only for reading.The users couldn´t give their opinions,ask for information or register as users.

Web 2.0.

21st century.In this new web,information became bidirectional.The users can create and share the information.New services became popular like email,chats,videoconferences,forums,blogs or wikis.

Web 3.0. 

New technologies allowed the integration of data and the web so that programs could "understand" and work with the information that they were receiving.