Looker, a business-intelligence startup based in Santa Cruz, California, just raised $103 million in a Series E funding round. Looker is now at unicorn status with a valuation of $1.6 billion, according to a person familiar with the company. It's raised $280.5 million in total since it was founded in 2012. According to Looker CEO Frank Bien, the key to being able to attract investors is strong customer satisfaction. A Santa Cruz, California-based startup just became tech's newest unicorn.