What exactly BFM contain?

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Hello,
I am confused about the BFM, what are the component does the BFM have? Does it having the reference model of DUT or it is having driver, seqr and monitor?

what is the significance of BFM?

In reply to abhi.khati7274:

https://verificationacademy.com/forums/uvm/what-difference-between-driver-and-bfm#reply-53187