Swift is a programming language developed by Apple Inc. for iOS, macOS, watchOS, tvOS, app development. It was introduced in 2014 as a replacement for Objective-C. Swift was designed to be safer and more efficient than Objective-C.

Swift is designed to work with Apple’s Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C code written for Apple products. It is designed to work with Apple’s Cocoa and Cocoa Touch frameworks, but it can also be used as a standalone language.

It is intended to be simpler than Objective-C and more familiar to those who are accustomed to writing software in other modern programming languages such as Java or Python.

The swift programming language is also open source and has now become one of the most popular programming languages for app development of all time

The development of Swift was started in 2010 by Chris Lattner, who then led the project alongside Doug Gregor, Ted Kremenek et al. Swift was introduced at WWDC in 2014. The first version was released on June 2, 2014, at Apple’s Worldwide Developers Conference (WWDC) keynote address.