How can a business accept bitcoin?

Good day, could you please elaborate on the process by which a business can start accepting Bitcoin as a form of payment? Are there any specific platforms or software that they need to integrate into their systems? Are there any security concerns or regulations that they should be aware of? Furthermore, how does the process of converting bitcoin to traditional currency work, and what are the associated fees or transaction costs? Lastly, are there any best practices or recommendations for businesses that are looking to implement bitcoin payments?