How to improve UX with service design tools

Service Design, service design, service design, everything around us has been serviced designed in one way or another, but how exactly can this kind of design be applied to the User Experience? Well, if we consider that digital products (web and mobile apps) are really not products themselves, but services, we can and should be using Service Design tools to help with the design of User Experiences.But what tools and how is the suggestion given on this article.
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