Hello Jayanth,
Both the colleges, IIITDM, Kancheepuram and IIIT, Kottyam offer Computer Science Engineering. However, if you are asking which one is better for CSE. IIIT, Kottyam would be better than IIITDM, Kancheepuram at almost all the fields. It has better placements, big campus with all the facilities etc.
I think IIIT, Kottyam would be a better choice.
Hope this information helps.
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