IFSC (Indian Financial System Code) is basically a code which is alphanumeric containing 11 Characters. It is given to each bank branch which takes part in the basic electronic systems i.e. RTGS (Real Time Gross Settlement) or NEFT (National Electronic Funds Transfer).
You can find IFS Code from your chequebook as shown below.
Or you can find your IFS Code from the website: https://myitreturn.com/bank_ifsc_code