Shopify lets you choose which payment options you'll let customers check out with. Examples are Stripe, PayPal, Shopify Payments, Google Pay, etc. A Shopify account is enough to get started, you won't need to dabble with any APIs.
However, if you're wanting to sell digital products, it may not be the best option for you. I've had to do a bit of extra work to get it to work for my situation.
However, if you're wanting to sell digital products, it may not be the best option for you. I've had to do a bit of extra work to get it to work for my situation.