The ease of use, the reliability and scalability of Undertow. The fact that it runs on a single server in most environments and does not require complex cluster setup, making it easy and fast to deploy. It can handle many concurrent requests and it's easy to configure. Undertow also has very good monitoring features to detect crashes without having to log in to the server. It can sometimes be slow, but that does not affect our project. Undertow allows us to manage many connections to ourβ¦