Difference between add-in Java-Stack and standalone stacks

Hello experts,
is there any difference between a Java-Stack as add-in in ABAP AS and two standalone stacks, aside from that the standalone systems are physically seperated. What other reasons are there to choose the one or the other? Is it performance or scalability? Are there any differences for developers (for example on XI or BI) or is the difference only important for administrators?
Best regards,
David

Hi David,
I've just found the following document is uploaded on SDN.
[How to Deploy SAP NetWeaver: Dual Stack vs. Separated Stacks|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d074d7de-8d55-2b10-1e94-fb2e9d2893d1]
Hope this help you
regards,
Yoshi

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