VSAT (Very Small Aperture Terminal) uses small satellite dishes to provide internet access anywhere by establishing an independent wireless link without relying on local infrastructure, offering advantages like availability, diversity, homogeneity, security, and affordable pricing. However, VSAT also has some disadvantages like higher latency due to satellites in geosynchronous orbit making it unsuitable for online gaming, the need for outdoor antennas complicating installation, and potential signal loss during heavy rain.