There are many colleges which offer cloud computing specialization in CS branch and few of them I am mentioning below -

SRM University, Sonepat

Chandigarh University, Chandigarh

Integral University, Lucknow

Vel Tech Dr. RR and Dr. SR Technical University Avadi, Chennai

Graphic Era University, Dehradun

School of Engineering and Technology, Sharda University, Greater Noida etc.

Good Luck!!!