There is a fair amount of confusion about the meaning of West Coast Jazz. Some argue that the term refers to jazz recorded on the west coast from Los Angeles up to San Francisco. Others say that West Coast Jazz refers to a certain sound rather than to a location. Some go so far to call it a brand created by West Coast record companies.
I envision West Coast Jazz as an attitude, a feeling, a vibe that could only have originated in a place filled with palm trees, open horizons, ocean breezes and urbanity. It was an answer to the left turn that took place when the Big Bands died out and jazz starting chasing the Bird down the bebop trail.