A Deposit Welcome Bonus is a promotional offer provided by online casinos and betting sites to attract new players. Typically, it matches a percentage of the initial deposit made by the user, effectively boosting their bankroll and enhancing their gaming experience. For example, a 100% bonus on a $100 deposit gives players an additional $100 to play with. This incentive not only encourages new sign-ups but also allows players to explore various games with increased funds. However, it's essential to read the terms and conditions, as wagering requirements may apply before any winnings can be withdrawn.