HAPS (High Altitude Platform System), are the radio stations operating in the stratosphere with an aim to provide wireless connectivity or perform remote sensing in isolated areas like mountains, coastal and desert areas. It looks like airships or balloons they are stationed at an altitude of 20 to 50 kilometers above the Earth at a fixed, specified point relative to the Earth. It use to provide wider coverage, less interference due to obstacles like buildings, ground elevations and have shorter time to deployment. When compare HAPS to Satellites have lower latency (transmission delay) and could be called back for maintenance or payload reconfiguration. This seminar offer overview to this technology and the way it work.