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The Jolie programming language recently attracted the attention of developers on Hacker News. Jolie is a service-oriented language that encourages developers to model distributed software as composable services whose orchestration is described separately from communication protocols (SOAP, HTTP, XML-RPC) and deployment architecture. Jolie strives to reduce the distance between specification and implementation by reifying services as a first-class concept.
[I think the predominant question here is: why a language over, e.g., a framework?]
In a nutshell: because we want to minimize code model distance. Other languages make you program in terms of functions, objects, etc., and make yourself model services by using these concepts. In Jolie, you write code that maps directly to the concepts that matter. What are the important concepts? APIs, Access Points, and Services (duh…) are examples.