For additional privacy/security when doing crypto-to-crypto swaps in Edge, users have the ability to prefer that swaps are routed through decentralized exchanges (DEXs) rather than centralized exchanges (CEXs).
To change your default exchange settings in Edge to prefer DEXs follow these steps:
Launch the app and login to your account
Tap the Side Menu (≡) at the top right
Tap Settings near the bottom
Underneath Options, tap on Exchange Settings
Tap the current selection under 'Preferred Exchange'
Select ‘Prefer Decentralized’