I am beingn recruited SDE1 for a particular group in Amazon and have cleared the phone stage and the onsite in a couple of weeks. i am doing it so far because I want to join amazon but not this prticulr group. how hard is it to change teams once youre in
You'd be expected to contribute a year or so before switching teams unless there is some specific reason
Absolutely possible. I'll leave Amazon soon because they hired me and put me in a place that didn't draw from my skill at all, actually more the contrary. On day 1 the HR guy told everyone that it's possible to swap teams if there are good reasons that we feel to be placed somewhere totally misaligned. I wish I had spoken up back then. So don't repeat my mistake. Get the offer first and address a bad fit on day 1 once you're hired. The HM will get over it. It's the most important aspect that a candidate ends up in the right spot with a company, otherwise it'll become a lose lose situation for both, you and the company.
make a note - In Amazon, your manager knows where you're internally applying.