Scala overview

Scala is a statically-typed, multi-paradigm language that runs on the JVM and compiles to JavaScript (Scala.js) or native (Scala Native). It fuses object-oriented and functional programming, offering pattern matching, case classes, traits, and a powerful type system with implicits (Scala 2) or given/using (Scala 3). Scala is the primary language of the Apache Spark distributed computing framework and is prominent in data engineering and streaming (Apache Flink, Kafka Streams). The Akka/Pekko toolkit makes it popular for actor-based concurrent systems. Functional libraries like Cats and ZIO bring effect systems and typeclasses for purely functional application architecture.