User Experience Design shares a lot in common with Design Thinking. e.g. understanding the users using research methods, ideation, rapid prototyping, testing with users. The differences are subtle. Design thinking is more systems-level and deals more with "wicked problems". It is more suited to service design scenarios. It is also more about the creative process and validating ideas before they are implemented in the real-world where implementing the wrong product or service can have dire consequences. Finally, the creative process is done in a group with multiple stakeholders present at the same time. The shared understanding happens synchronously. UX often goes further into the details of the design, like human/computer interfaces, graphics design, interactions, and a whole lot more.

Design Thinking is starting with a problem (e.g. people want to read more, but don't have time) and looking for a valid solution (e.g. audiobooks). User experience is starting from a solution (e.g. audiobooks) and making that work in a user context (e.g. we need an android app that integrates with Google Home to read our audiobooks). In business speak: Design Thinking= the 'what' User Experience= the 'how'.

Therefore, Design Thinking is very much part of UX with a specific focus. It is about user/customer empathy from a business perspective, asking the question "What if...?". What if we focus our business or products in another area where we are not today - pushing the boundaries of the current business, but from a user-centric point of view and using this view to define where products and services should go and also to drive architectural changes. The customer/user journeys play an essential part of this, not just the DT concepts that are generated.