Inside the secretive world of Palantir Technologies, the $20 billion Peter Thiel-backed government contractor expected to go public this fall

· The Peter Thiel-backed startup built its reputation as a secret purveyor of government spy technologies, supplying near-magical tools to law enforcement and military clients around the globe.
· But behind the scenes, Palantir has struggled to build the type of steady, recurring revenue model that makes other software...