As the India Australia relationship upgrades from 3Cs of Cricket, Curry and Commonwealth to 3Ds of Defence, Diplomacy and Diaspora, the evolving dynamics of the relationship have a huge potential for both the countries. The opportunities provided by the 3Ds are immense and are having incremental, clear and conclusive repercussions for the relationship. Based on Defence, Diplomacy and Diaspora and supported by specifics, India and Australia in Indo-Pacific provides an insight into the interplay between the three Ds and attempts to lend a prognostication for the bilateral relationship.