The key benefit is - You get all recent CVE patches which protects your
product more from known vulnerabilities.

You can see a comparison table here -

I would recommend that you review Servlet, Connector, and Java version
related changes carefully (if you have hard dependency on them). it would
be better to move to 8.5 first in my opinion, but no harm going to 9.x
directly if your product is okay.


On Wed, 29 Aug 2018 at 15:52, Lueders, Paul T CIV USARMY NGIC (US) <> wrote:

> I would like to migrate from tomcat 7.0.90 to the latest version of
> tomcat9.  Is there a document that lists the benefits of tomcat9 and the
> differences between tomcat7 and tomcat9
> Thanks
> Paul
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