Want to use local web server and web application server in Appian.

AFAIK this is not supported. May I ask why you would want to do that?

Thank you Stefan.

Does it mean Apache is the only web server and Apache Tomcat is the only web application server supported by Appian?

For the web server, it officially supports Apache and IIS. Although not officially supported, I don't think it would be too complicated to make it work with other web servers seeing as it is mostly proxying requests back and forth.

As for the app server, Tomcat is your only option as it's bundled in the install.

I think I've seen the use of IBM web server in previous articles.
Is it now excluded from being officially supported?
Where can I see to check whether it is supported or not?
And is there any documentation I can refer to if I want to use a local web server?

Will the local web server and web application server be available by Appian in the future?

Is there any plan for such?

https://docs.appian.com/suite/help/21.3/System_Requirements.html

docs.appian.com/.../Installation_Guide.html

There is a modified version of tomcat included in the installer. And this is the only option regarding web application server. Appian mentions IIS and Apache as supported web servers.

Thank you!!