I have a simple question. Is it necessary to use a betting exchange in order to have positive outcomes from sports arbitrage? Also, do you use any notifications and software services to find arbitrage possibilities? 10x in advance
A betting exchange like Betfair is recommended as it gives more arbitrage opportunities. You need to make sure you have accounts with multiple sportsbooks that are well funded. Make each research on your own and don't rely on any websites or other software. For more details on arbitrage betting read this article: https://www.topratedbettingsites.co.uk/guide/arbitrage-betting/
I used to have massive success with laying off footy coupon prices where games were on coupons but not online. You need to follow oddsportal for smaller bookies to price up games and use SSBTS to lay em off as betfair lacks liquidity and you'll lose betting accounts ridiculously quickly