API

Think of an API as a waiter in a restaurant who takes your order (request) and delivers it to the kitchen (the system), then brings back your food (response).

Google Maps API allows other apps to integrate mapping services without building a map feature from scratch.

APIs enable different software systems to work together, facilitating integration and extending functionality.

APIs can streamline operations, reduce development time, and open new business opportunities through third-party integrations.

• Use Case 1: Integrating payment processing systems like PayPal into an e-commerce site.
• Use Case 2: Connecting CRM software with email marketing platforms for better customer data management.
• Use Case 3: Enhancing mobile apps by integrating social media sharing features.

Use clear, consistent API documentation; prioritize security by managing API keys carefully; ensure version control to manage updates.

Poor documentation can lead to integration issues; not versioning APIs can cause compatibility problems; failing to secure APIs may expose data.

• API uptime.
• API response time.
• Number of API calls.
• Error rate.

• Postman (API testing)
• Swagger (API documentation)
• RESTful APIs.