Combining ZIO's powerful effect system with ZStream allows for expressive and efficient streaming computations, but the step between ZIO and ZStream can be confusing for the beginner. This tutorial will guide you in using ZSink , ZStream.fromZIO , and ZStream.runHead in a Scala application. We'll develop a simple step-by-step application to demonstrate these concepts. Prerequisites Basic understanding of Scala and functional programming Familiarity with ZIO 2.x library Setting Up Your Environment Ensure Scala (2.13.x or 3.x) and sbt are installed. Add ZIO 2 and ZIO Streams to your build.sbt : "dev.zio" %% "zio" % "2.0.21" , "dev.zio" %% "zio-streams" % "2.0.21" Introduction A couple of weeks ago, I wrote a post about ZIO :s monadic nature. As ZIO is a monad we can use map and flatMap to chain effects, resulting in a new monad. ZStream s are also monads in the same way. We often use for -comprehensions to combine t...