# Web 4.0 Digital Twin The ThreeFold web4 Digital Twin architecture puts the user in the center of its digital life, for that every user owns a digital twin running on the ThreeFold grid.  Every user uses any browser to access their digital twin. ### The twin has many capabilities: The twin has basic capabilities which are strongly version controlled, but contributions from the global community are more than welcome.  ### Experiences Developers create Experiences using the twin capabilities, not apps. Experiences re-use the same capabilities. This has huge benefits - a lot less development effort needed per experience - more sustainable (less energy loss) - easier for user, no duplication - more simplicy - more powerful