Scala is a general-purpose, high-level programming language that is designed to be both object-oriented and functional. It was developed by Martin Odersky and his team at EPFL (École polytechnique fédérale de Lausanne) in Switzerland, and it was first released in 2003. Scala is compatible with the Java Virtual Machine (JVM) and the .NET Common Language Runtime (CLR), which means that Scala code can run on any platform that supports the JVM or the CLR.
Scala is considered a hybrid language, it combines the best features of both object-oriented and functional programming, it's also a statically-typed language, which means that variables have to be declared with a specific type, such as Int, String, or Boolean. It also supports functional programming concepts such as immutable data, higher-order functions, and pattern matching.
Scala is widely used in the development of web applications, particularly in the Big Data field, it's also used to create distributed systems and it's often used to develop applications that run on the Apache Spark framework and the Apache Kafka messaging system.
Scala is considered a powerful and expressive language, it has a large and active community, which makes it easy to find support and tutorials online, it also has a rich set of libraries, frameworks, and tools that can be used for different needs.