(a whole other set of blog posts - on the journey and outcome are planned), and I was missing one of the tools in belt and that was aws-vault.
If you look at the releases you will see that there is no binary available for arm.
I opened up an issue on the repository - and the answer that I got was - that it is not likely to have any binary released for ARM in the near future, I should go and compile it for myself.
I did, here are the steps.
Hope it is useful for someone in the future.