WHAT IS SWIFT PROGRAMMING LANGUAGE AND WHY SHOULD YOU USE IT?

Swift was created by Apple in 2014 for iOS, watchOS, tvOS, macOS app development as a logical substitute for Objective-C, which had flaws and was outdated to a certain extent. Although Swift continues some of the Objective C concepts, e.g., extensible programming, the approach is different due protocol-oriented design and static typing. Swift supports Linux apps as well. Like any other programming language, it has both pros and cons.
Take a closer look here - https://blackthorn-vision.com/blog/what-is-swift-programming-language-and-why-should-you-use-it