Hello NeroZyF, sorry for the late reply, but to answer your questions, a payment gateway is a service/software that people use  to accept payments with other means then fiat, like credit cards, but in this case, a merchant would be able to accept Beyondcoin as a form of payment with the Beyondcoin payment gateway. Now, some other key points are the soon to be finished Electrum wallets, which will allow for more secure storage of Beyondcoin and the Beyondcoin lightning network. The Beyondcoin lightning network will allow faster transactions and added security via transaction routing. Also, the atomic network will be a Beyondcoin layer which will allow transactions to be sent at sub-atomic speeds with quantum employed security. This is a custom layer that I've been planning and with current technology, this could be achievable soon.