Web 3.0 refers to a vision for the future of the internet where data and applications are fully integrated and accessible through intelligent agents and semantic technologies. It builds upon previous iterations by combining data available online (Web 1.0), powerful applications (Web 2.0), and the ability to plug into vast amounts of integrated data through open APIs. Major changes will include software development moving entirely to the cloud, global collaboration, exposure of more open data and APIs by companies, and potential integration with artificial intelligence and 3D virtual spaces.