Hello, you can connect the selected payment system directly to the site or use the services of aggregators. The second option is cheaper and more versatile, as it allows you to simultaneously accept payments with different cards, from terminals and even mobile numbers, but only as long as your company is a small business. With an increase in the number of transactions, the commission will also grow, and the quality of support from aggregators is much worse than from direct providers. In addition, if customer security and promotion on Google are important to you, it is better to immediately choose one service, for example, white label payment gateway, which will be convenient for most buyers, and in the future expand the functionality of the site with one or two more online payment methods.