SOAP services use which technology to format information?

SATA (Serial Advanced Technology Attachment) is a hardware interface standard for connecting storage devices such as hard drives and SSDs, with no relation to web service message formatting.

PCI (Peripheral Component Interconnect) is a hardware bus standard for connecting expansion cards to a computer motherboard, entirely unrelated to data format technologies for services.

SOAP is a W3C-defined protocol that requires XML to format all messages, wrapping data in an XML envelope with a distinct header and body structure. This XML-based format provides platform-neutral, self-describing structured data exchange, and XML is non-negotiable in SOAP - it is built into the protocol specification itself.

ISDN (Integrated Services Digital Network) is a telecommunications standard for transmitting voice and data over digital telephone lines, not a data serialization or message formatting technology.