What's the point of deploying spring boot application on an application server like Wildfly?

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In my previous company we were using spring boot for our backend and they used to deploy the application on a Wildfly server which i found it weird because spring boot comes with an embedded server that eleminates the need of an application server. I would like to know the point behind this?

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Marcos Zolnowski On

If you have one single big server, running the default fat Wildfly, the waste of resources (DISK/CPU/RAM) is negligible.

Faster deployments, if you are deploying only the app, the update is faster, it doesn't need to restart the entire server stack, so you get 1 or 2 seconds less downtime.