Upon the crypto landscape, DEX gives solutions for crypto users who want to do crypto trading without any centralization activities. So fees involved in this platform are low because of avoiding admin.  It is fully functional by smart contracts and connection of wallet. If crypto startups launch this business they can attain revenue from the following activities    

• Transaction Fee

• Token issuance and sales

• Token pair revenue 

• Staking

• Yield Farming

From opting a decentralized exchange script from an established blockchain solution provider start DEX business.