Portal Landscape Question

Lately I've been getting a lot of emails on questions regarding Portal Landscape concepts and i felt i should share it with you readers ...below is one of those questions and my reply:

Hi Rahul,
I have been reading through your blog on The Cloak and Dagger about Portal and BI Connectivity.We are on SAP NW 7.0(SR1)-BI 7.0 usage types ABAP+Java. We are planning to go for EP with BI Environment. As of now we have three options in our Current scenario.
1) Building EP on the existing environment (ABAP+JAVA).
2) Fresh installation of EP which requires additional hardware.
3) We are alredy using EP for ESS, can we integrate the existing EP (ESS) with BI.
Currently our BI Portal internal portal is running on BSP+WEB Dispatcher+ICM functionality.Please suggest on how to go forward with the scenario's above. Also, suggest the major advantages of integrating EP with BI.


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