Selling on Amazon

1)  you have  to  take  regular  regitrsation  who  intended to supply of  Goods  services  through  E.Commerce opreator  ,because compostion scheme is not applicable  , who engaged  in making supply through  E.commerce  opreator  as per section 10 (2A) (c)  of the CGST  act  2017 . 

2) For  E.commerce Opreator (  who requried  to collect tax at  source under section 52)   registration  is compulsary  irrespective  of the turnover  as per section 24(x)  of the CGST  2017 .