The security standard that applies to anyone who handles payment card data. Its requirements cover storage, transmission, access control, logging, and regular testing.
Compliance scope depends entirely on architecture: a product that never touches raw card numbers has a small, cheap obligation, while one that stores them takes on an audit burden most companies should avoid.
We design payment flows so card data never reaches your infrastructure, which keeps you in the lightest compliance tier, and document the data flow so your assessor can verify it quickly.