Server-side technologies in web development have evolved a lot, and with the rise of frameworks such as Spring and Play, the need for Java EE has reduced and opened doors for more feature-rich alternatives, such as Spring Boot, for example. Some of the core technologies such as Hibernate are here to stay, while newer concepts such as JWT, Liquibase, Swagger, Kafka, and WebSockets bring a lot of additional opportunities. Let us take a quick look at some of the important technologies supported by JHipster; we will encounter these later on in the book and will take a deeper look at some of these technologies.