Hi Harini
IBP is not replacement of BPC.
Moreover, IBP can be integrated with BPC. For example - IBP can take input from BPC for Annual Operation Plan(AOP), Monthly/Quarterly Finance Plan and Use this information for Demand/Supply/S&OP planning.
Then IBP can send output like Mid and Long Term Plan, Constrained Collaborative Plan, Revenue and Profit Plans to BPC as a detailed starting point for financial planning in BPC.
This integration brings the value by - Align financial plan with S&OP inputs, Improve corporate forecast accuracy.
That's just my two cents..hope this will help.
Thank you
Satish Waghmare