Part One: SOAP-Based APIs

Simple Object Access Protocol (SOAP) is a messaging protocol based on requests and responses using an XML format. Although some legacy systems still use SOAP over SMTP, the transport method typically used for SOAP requests is HTTP. As an API protocol, SOAP is platform-and language-agnostic, allowing for two applications running on completely different systems to communicate with one another.

This post is part of a two-part series covering how to create custom API endpoints in Salesforce with APEX. In Part One, we’ll walk through how to create a SOAP-based API endpoint for other applications to use when communicating with your Salesforce org.