As we move into an increasingly multi-cloud world, there is a portability problem moving applications between clouds. Gravitational wants to fix that, and today it announced a $25 million Series A. The round was led by Kleiner Perkins with help from S28 Capital and Y Combinator. Today’s investment brings the total raised to $31 million, according to the company. Ev Kontsevoy, Gravitational co-founder and CEO, says his company is solving a couple of big problems around cloud portability.