So much politics (again depends on which tower you're going to be)
In-house IT is coming (forcing people to change their job role if he has to continue)
can hire you as "X" and after a year for the namesake of company's need, can ask you to change your role to "Y" without consulting you.
it's better to choose Diageo in India after 2020 (when things will be stable here).
Don't expect a Global culture.