I am looking to integrate PayPal into my existing website. I have looked into Paypal Developer guide and there are lots of options. I am not sure which one to use.
Since this is my very first time using PayPal API, could someone suggest me the best option in API for my requirement.
My requirement is very basic. I have an invoice page in my website, When the user clicks Buy Now, I would like to redirect to PayPal website, and once the customer pays, I want to redirect to my server with a Response (Success or Fail), so that I can update the status of the invoice from Backend.
Thanks in advance.