Can you explain how a bank guarantee works in detail?

A bank guarantee is a promise from a bank to pay a specified amount of money to a beneficiary if the person who requested the guarantee fails to fulfill their obligations. It is a form of financial security that helps ensure that transactions or contracts are completed as agreed. The bank acts as a guarantor, providing assurance to the beneficiary that they will receive payment if the original party defaults. This can be used in various situations such as securing a loan, participating in a bid, or fulfilling a contractual obligation.