[random_dork1]

The article is quite explicit. Here is a small sample:

It has the features you would expect in a video call tool — like audio, video chat and screen sharing, but the UX and the integrations were built exclusively for developers. You can easily share your code and do pair programming. We are building integrations for all the IDEs. This enables you to collaborate without screen sharing (so it's faster and and consumes less bandwidth), directly from your IDE and independently of the IDE that other people are using.