APIs (Application Programming Interfaces) are a fundamental component of modern data systems, enabling different applications and services to communicate and exchange data efficiently. This certification assessment evaluates a learner’s understanding of how APIs function and how they are used within modern data engineering and data integration environments.

The assessment focuses on the core principles of APIs, including how systems interact through API requests and responses, how data is transmitted between platforms, and how APIs enable seamless communication across distributed systems.

Participants will be evaluated on their understanding of key API concepts such as:

• The fundamental purpose and structure of APIs
• How API requests and responses operate
• The role of HTTP protocols in API communication
• API endpoints, parameters, and response structures
• Common data formats used in APIs such as JSON and XML

The assessment also tests knowledge of the major API architectures and communication styles used across modern software and data platforms, including:

• REST APIs – widely used web APIs based on HTTP methods
• SOAP APIs – protocol-based APIs commonly used in enterprise systems
• GraphQL APIs – flexible query-based APIs for efficient data retrieval
• RPC APIs (Remote Procedure Call) – APIs used to execute remote system functions
• Streaming APIs – APIs designed for continuous real-time data delivery
• Webhooks – event-driven APIs that automatically push data when events occur

Through this assessment, participants demonstrate their conceptual understanding of how APIs operate, the different types of APIs that exist, and how these interfaces enable data exchange across modern digital systems.

This certification assessment validates foundational API knowledge that is essential for professionals working in data engineering, data analytics, and modern data platform environments.