This is probably not the correct place to put this but, its a start.
We have a payment processor that has an API we want to integrate with in a couple of our applications. They are PCI certified and in order for us to use their API we must be compliant as well. We do not wish to store card data, only the transaction amounts, confirmations and dates of payments for our customers. Also we will have our own UI payment form. We want to use a cloud service such as Azure AppServices that are PCI DSS compliant.
If we host our payment service as such, what kind of compliance do we need?