Transaction fees are charges assessed for processing financial transactions. In traditional banking, these fees can cover the costs of maintaining bank infrastructure and services. In the cryptocurrency world, transaction fees compensate network miners or validators who facilitate and secure the blockchain. These fees vary based on the transaction complexity, the speed of processing required, and network congestion at the time of the transaction. For a more detailed explanation of how transaction fees work and why they're necessary, this guide could be very informative: https://paybis.com/blog/glossary/what-is-a-transaction-fee/ It provides insight into the rationale behind these fees and how they contribute to the security and efficiency of various payment systems.