Scala is a flexible language that enables many programming styles. While its un-opinionated design fosters innovation and experimentation in the community, the choices it offers places a burden on its users to figure out how best to use the language. This talk will be an opinionated recommendation of how to apply Scala in real world projects. We will claim that the most effective way to use Scala is not as a better Java, nor as Haskel on the JVM, but as a "third way" that best fits Scala's design. We'll give you practical guidelines that will make you a more effective Scala programmer.