Partner WSDL

In plain words: Salesforce SOAP Integration allows enterprise systems to exchange structured data with Salesforce using XML-based messages governed by a strict contract called a WSDL (Web Services Description Language). While REST is great for lightweight, flexible web apps, SOAP provides strict typing, formal contracts, and enterprise-grade reliability for banking, ERP, and legacy systems. Connecting Salesforce with on-premises infrastructure, financial hubs, and enterprise resource planning (ERP) platforms often requires a contract-first integration approach. SOAP (Simple Object Access Protocol) provides a rigid, XML-based messaging framework that guarantees data structure conformity, strict data typing, and reliable end-to-end communication across enterprise systems.