Principally yes, but practically no.
Katalon Studio Enterprise minus Graphical User Interface plus Command Line Interface makes Katalon Runtime Engine.
If you want to do CI/CD, you desperately require CLI. So you need to purchase KRE. And you would certainly require an GUI environment to write and develop your test suites. Therefore you would neeed Katalon Studio. So, you need both of Katalon Studio and KRE.
In another post @ bhavyansh.ameta wrote:
Katalon Studio and Katalon Runtime Engine need separate licenses to be utilized.
Then, pricipally, you can choose KS Free + KRE as these are licensed seperately.
Do you require Custom Keyword feature for your project? If yes, you need to purchace Katalon Studio Enterprise. If not, you can live with Katalon Studio Free.
A short history of Custom Keyword — how it was removed from the free offering. I have ever read a post in this forum previously, a few years ago, Katalon wants you to purchace at least one license of Katalo Studio Enterprise gentlemanly together with KRE. Today, Katalon offers Katalon Studio Free. But you should note, since v9.1.0 release at Nov 2023, the Free product is designed partly disabled intentionaly. E.g, you can not write custom Groovy classes (called custom Keyword in the Katalon term) in the Free product. They push you (a candidate KRE licensee) to purchace Katalon Studio Enterprise as well. Possibly they no longer expect you to be a gentleman.