SOAP (Simple Object Access Protocol) is a standardized protocol for exchanging structured data in web services. It uses XML as its message format and relies on application layer protocols like HTTP or SMTP for transport. Here's a quick breakdown:

🔧 Core Features

  • XML-based Messaging: Structured data is encoded in XML format
  • Transport Neutrality: Works with HTTP, SMTP, etc. (commonly HTTP)
  • Stateless Communication: Each request contains all necessary information
  • Extensibility: Supports WS-* standards for security, transactions, etc.
  • Platform Independence: Works across different operating systems and programming languages

📌 Key Components

  1. Envelope: Outermost XML element defining the message boundary
  2. Header: Optional metadata (e.g., authentication, routing)
  3. Body: Contains the actual message data
  4. Fault: Error handling mechanism
  5. Addressing: Specifies the endpoint URL

🌐 Use Cases

  • Enterprise-level web services
  • Legacy system integration
  • APIs requiring strict XML formatting
  • Complex transaction scenarios

🧭 Related Resources

Explore SOAP Implementation Details
Learn About REST vs SOAP

SOAP Overview
SOAP Message Structure
SOAP Web Service