Raidan, A Trek to Info Tech. Aidan's Perera's portfolio website alongside his contributors' posts. Raidan invites you to be a part of the satisfied customer base.In this category, we discuss Green-tech. Green technology is an umbrella term that describes technology and science to create products that are more environmentally friendly. Examples of green tech include the technology infrastructure used to recycle waste, purify water, design clean energy, and conserve natural resources.