This document discusses how to pick a future-proof Java architecture that can last 10+ years. It recommends using the latest JVM, Java as the default language, a microservices architecture where applicable, and going light on application middleware. For the user interface, it suggests keeping it simple with a web approach initially. It also advises choosing sustainable frameworks with large communities and track records of backward compatibility, and staying conservative in your architecture choices. The goal is to build scalability and flexibility into the architecture to handle changing environments over the long term.