Scrum was designed as a system to help development organizations overcome complex adaptive problems to deliver products with the highest value possible. Nexus is no different, with the exception that it also addresses the complexities of dependencies and communications across multiple Scrums working in collaboration to achieve a common goal.
Nexus exists because many, if not most, products are too complex to deliver with a single product development team. Integrating work at scale is difficult due to added complexities of dependencies at scale. This is the same issue we discussed in Chapter 4, Systems Thinking. But now, we must deal with managing the complex adaptive problems associated with managing two large systems – the product under development and the multiple Scrum Teams working in collaboration to build and deliver the product.