E-business involves conducting business online through activities like buying and selling products and services, as well as collaborating with partners and customers to improve business productivity and profitability. M-Commerce refers to buying and selling goods and services using mobile devices and paying for services with a mobile phone. A virtual classroom is an online learning environment where either the teacher or students are not physically present, allowing live collaboration and interaction between learners and instructors anywhere in the world. Social software enables online interaction and creates virtual environments for people to collaborate and form virtual communities, while Web 2.0 uses networks as a platform to deliver applications via browsers.