SWIFT was first introduced to the world by Apple at Apple's 2014 Worldwide Developers Conference (WWDC). SWIFT is a powerful and intuitive programming built with LLVM compiler framework and has been added in XCode6 and onwards.
Ever since its introduction to the world, SWIFT has been a buzzword all around. It is supposedly, as mentioned repeatedly, a better platform for development as compared to long-time rival Objective-C and is meant to replace it in due course of time.
Lyft decided to pivot from being a conventional ride-sharing service into something more directly competitive with Uber.A bit over a year after Apple's announcement, it was ready with an all-Swift version of Lyft.