Hi B Mittal
No, it doesn't have all the functionality BI does.
S/4 HANA in combination with Business Objects / BI would be complementary.
I would advise you to read through the blog posts of Ingo Hilgefort to get an idea on combinations, what makes sense when etc. This is still valid for S/4 HANA as well ~ some advancements have been made in the meantime which now also provides SAP HANA more functionality / capabilities even then before with SP10 release for example. But general thoughts when BW makes sense are still valid.
How does all this work together – BW, BW on HANA, Suite on HANA, HANA Live….. Part1
Best regards
Tom