New to Internet Sales for ERP - Few basic questions.

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Hi,

We are going to implement Internet Sales for ERP and I have some questions.

1) Is Product Catalog Mandatory for implementing Internet Sales for ERP / R3?

2) We are already using MDM for catalog and we are not the Product Catalog module in R3. Will there be a problem implementing MDM into ISA? Has anyone implemented ISA with MDM as product catalog?

3) We are planning to make it an extra-net application; what is the best architecture placement of the ISA server? Should we have it in DMZ or outside DMZ. What is the best approach among option a and b?

a) Web Browser (Internet) -- External Firewall -- Webserver + ISA server -- Internal Firewall -- ERP

b) Web Browser (Internet) -- External Firewall -- Webserver -- Internal Firewall -- ISA server + ERP

Please Enlighten.

Thanks,

Deepak