Live arb is a mathematically calculated arbitrage situation which appears due to difference in bookmakers odds in real time. Consequently, you have a chance to bet all the opposing outcomes of the event with different bookies and get profit!
Only experienced arbers are advised to work with live arbs. It is due to quick odds change.
You have to have excellent knowledge and experience to succeed with Live arbitrage situations.
Live arbs are attractive for gamblers as their profitability is higher, bankroll return is much quicker and risks to be limited are much lower than in Prematch.
However, the odds are changing very fast, so only experienced arbers are advised to work with them.