What is SOAP?
SOAP is an older, strictly structured protocol for web APIs. Below you can read how it works and when you encounter it.
SOAP is an older, strictly structured protocol for web APIs, with messages in XML. It is still widely used by existing ERP and government systems. Where SOAP is heavier, new connections usually opt for the lighter REST.
A strict XML standard
SOAP (Simple Object Access Protocol) is a way in which systems exchange messages via web APIs, always in XML and with a strictly prescribed structure. A WSDL file describes exactly which functions there are and how a message must look.
That strictness makes SOAP predictable and strong in formal environments, but also heavier and more cumbersome than modern alternatives. Security and transactions are extensively built in.
SOAP or REST?
Many existing ERP, banking and government systems still offer a SOAP API. For new connections we usually choose the lighter REST with JSON. We connect on both and translate where needed between SOAP and the rest of your landscape.
Connect or build something?
In a free one-hour process scan, we look at your systems and the manual work between them. After that, a fixed-fee quote. No surprises afterwards.