The include their motivation in their language spec:
"What makes wing special? Traditional programming languages are designed around the premise of telling a single machine what to do. The output of the compiler is a program that can be executed on that machine. But cloud applications are distributed systems that consist of code running across multiple machines and which intimately use various cloud resources and services to achieve their business goals.
"Wing’s goal is to allow developers to express all pieces of a cloud application using the same programming language. This way, we can leverage the power of the compiler to deeply understand the intent of the developer and implement it with the mechanics of the cloud."
"What makes wing special? Traditional programming languages are designed around the premise of telling a single machine what to do. The output of the compiler is a program that can be executed on that machine. But cloud applications are distributed systems that consist of code running across multiple machines and which intimately use various cloud resources and services to achieve their business goals.
"Wing’s goal is to allow developers to express all pieces of a cloud application using the same programming language. This way, we can leverage the power of the compiler to deeply understand the intent of the developer and implement it with the mechanics of the cloud."