Application server

Any application server can be used as long, as it fully implements the Jakarta EE 8 profile. At the time of writing, only the reference implementation (Glassfish 5) was available with full support for version 8. Therefore, all examples in this book have been written and tested on Glassfish 5 therefore, I recommend using it, as all the related instructions and configurations are written for this application server specifically and other application servers may require additional configurations that you may have to perform on your own.