If asked which software truly brought GIS (Geographic Information Systems) out of the ivory tower and made it a "must-have" on the average person's computer, the answer is likely one and only: Google Earth. Recently, the official Google Maps Platform released a special commemorative page celebrating the 20th anniversary of Google Earth's release. Hearing this news will surely take many veteran GIS professionals back to the moment they first spun the blue planet on their screens and first searched for their own rooftop. This editor first used Google Earth before university; perhaps by chance, or perhaps inspired by it, I ended up entering this field. Taking this opportunity, let's talk about the evolution of the world's most influential GIS software.



