What an exchange actually is
With a traditional bookmaker, the bookmaker names a price and you either take it or leave it. Your win is the bookmaker's loss.
On an exchange, the platform is a matchmaker. One user says "I think this team wins and I will take odds of X." Another user says "I think it does not, and I will accept those odds." The platform pairs them, holds the money, and pays the winner when the market settles. The platform itself takes a commission rather than a side; the desk confirms the current figure in the chat.
That is why exchange odds can be better than a bookmaker's and why they move so often. There is no one behind a counter deciding the price. It is set by what users on both sides will agree to at that moment.
Back and lay in plain words
Backing
To back is the bet everyone already knows. You pick an outcome and stake money on it happening. If it happens, you get your stake back plus your profit. If it does not, you lose the stake. Your maximum loss is the stake, full stop.
Laying
To lay is the new part. You are the one accepting somebody else's back bet. You are betting that the outcome does not happen. If it does not happen, you keep the backer's stake as your profit. If it does happen, you pay the backer their winnings. That payment is called your liability, and it is the amount the platform holds from your balance while the bet is open.
Laying feels odd the first time because your potential loss can be bigger than your potential profit. It is the same arithmetic as backing, just seen from the other chair.
A worked example with made-up numbers
This is an example, not a real market
The odds, stakes and team names below are invented so the maths is round. Real odds will look different, and real stakes are yours to decide. Nothing here is a tip or a suggestion of what to bet.
Imagine a match between Team A and Team B. The market for Team A to win shows odds of 2.00 on both the back and lay side. Two users, Priya and Rahul, take opposite views.
| Feature | Priya backs Team A | Rahul lays Team A |
|---|---|---|
| Stake or liability | Stakes 100 units | Accepts the 100 unit bet, liability 100 units |
| If Team A wins | Gets 200 units back (100 stake + 100 profit) | Pays 100 units to Priya |
| If Team A loses | Loses the 100 unit stake | Keeps the 100 units as profit |
At odds of 2.00 the two sides are mirror images. Change the odds and the picture tilts. If the odds were 4.00 instead, Priya would win 300 units of profit on her 100 unit stake, and Rahul would need a liability of 300 units to accept it. Higher odds mean a larger liability for the layer and a larger profit for the backer. Lower odds mean the opposite.
Before you place anything real, run a few examples like this with your own numbers. Better still, run them on a demo ID where a wrong click costs nothing.
Session markets
The match result is only one market. Cricket in particular has markets on slices of the game, and these are what people mean by session markets. The platform posts a line, say a number of runs in a set of overs, and you back or lay the actual figure landing above or below that line.
Session markets settle fast, sometimes within a few overs, and the line moves as wickets fall and the run rate changes. That makes them lively and also easy to misread if you are new. Two habits help. Read exactly which overs the market covers before you bet, and check if the line is a total or a per-side figure. If a market name is unclear, ask the team in the chat before you place anything rather than after.
Why odds move
Odds on an exchange move for three reasons, and it helps to know which one you are looking at.
The first is money. When more users want to back an outcome than lay it, backers have to accept shorter odds to get matched, and the price drifts down. When more want to lay, the price drifts up. Nothing has happened in the match; the crowd has just shifted.
The second is the game itself. A wicket, a boundary, an injury or a rain delay changes what people think will happen, and the odds jump to catch up. This is the movement that in-play bettors watch for.
The third is time. As a match gets closer to its end, the possible outcomes narrow and the odds on the likely result shorten steadily even if nothing dramatic happens.
Terms you will see on the screen
| Term | What it means |
|---|---|
| Back | Bet that an outcome happens |
| Lay | Bet that an outcome does not happen |
| Stake | The amount a backer risks |
| Liability | The amount a layer risks if the outcome happens |
| Matched | Your bet has found someone on the other side and is live |
| Unmatched | Your bet is waiting for someone to accept the odds you asked for; you can cancel it |
| Exposure | The most you can lose across every open bet, held out of your balance |
| Settled | The market has finished and wins and losses have been applied to your balance |
Betting exchange basics beyond this page
If you do not have an ID yet, the Sky Exchange ID page explains how the team issues one after a short chat. If you have one and want to practise, ask for a demo alongside it. Once real money is involved, keep the deposits and withdrawals page handy, because open exposure changes what you can withdraw. And run through the security checklist before your first real session, since a well-placed bet means nothing if the ID is not yours alone. For any term this page did not cover, message the team on WhatsApp and ask; the Support page explains what to include.