Bhutani Etherea Bhutani Etherea by Bhutani Group is a commercial project in Sector 90, Noida. Spread over 25 Acre mixed-use IT/ITeS plot just across Sector 137 Noida, the project comprises four tower of IT/ITeS offices and retail stores. Alphathum will be developed in 20 Lakh Square Feet of built-up area. It comprises three skyscraper towers.