API testing courses can help you learn how to validate API functionality, performance, security, and reliability. You can build skills in writing test cases, automating tests, and analyzing API responses to ensure they meet specifications. Many courses introduce tools like Postman, SoapUI, and JMeter, that support executing tests and monitoring API behavior. You'll also explore methods for integrating testing into the development process, enhancing collaboration between teams, and ensuring seamless application performance.

Technical University of Denmark (DTU)
Skills you'll gain: Energy and Utilities, Chemistry, Sustainable Engineering, Sustainable Development, Plant Operations and Management, Chemical Engineering, Process Engineering, Thermal Management, Environmental Engineering, Analytical Chemistry, Materials science, Analytical Testing, Laboratory Research, Engineering Calculations, Mathematical Modeling, Experimentation
★ 4.8 (27) · Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Serverless Computing, Amazon Web Services, Amazon CloudWatch, Amazon Elastic Compute Cloud, Cloud Management, Load Balancing, Amazon S3, AWS Identity and Access Management (IAM), Cloud Computing Architecture, Cloud Applications, System Monitoring, API Gateway, Scalability, Application Deployment, Cloud Storage
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Application Deployment, Cloud Deployment, API Gateway, Cloud API, Application Programming Interface (API), Multi-Tenant Cloud Environments, Cloud Hosting, Control Panels, Google Cloud Platform
Beginner · Project · Less Than 2 Hours

Skills you'll gain: Extensible Markup Language (XML), Extensible Languages and XML, Cascading Style Sheets (CSS), HTML and CSS, Code Reusability, Data Validation, Data Import/Export, Data Mapping, Verification And Validation, Data Sharing, Hypertext Markup Language (HTML), Interoperability, Computational Logic, Technical Documentation, Data Management, Scripting
★ 4.5 (80) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Microservices, .NET Framework, ASP.NET, Microsoft Azure, Object-Relational Mapping, OAuth, Cloud Storage, API Gateway, Software Architecture, Payment Systems, Authentications, Software Development, C# (Programming Language), Model View Controller, Application Programming Interface (API), Software Design Patterns, Restful API, Identity and Access Management, Authorization (Computing)
Beginner · Course · 3 - 6 Months

Scrimba
Skills you'll gain: React Redux, React.js, Cascading Style Sheets (CSS), UI Components, JavaScript Frameworks, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Javascript, Application Programming Interface (API), Web Design, Frontend Performance, Authorization (Computing), Web Development, Web Applications, Middleware
★ 4.8 (33) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Server Side, Restful API, Apache, Full-Stack Web Development, API Design, Node.JS, Web Servers, Postman API Platform, Authentications, Application Programming Interface (API), Web Applications, Back-End Web Development, Web Development Tools, Frontend Integration, API Testing, Web Development, Javascript, JSON, Application Security, PHP (Scripting Language)
Beginner · Specialization · 1 - 3 Months

LearnKartS
Skills you'll gain: Apache Kafka, Prometheus (Software), Performance Metric, Data Processing, Network Monitoring, Transaction Processing, Event Monitoring, Configuration Management, Network Troubleshooting, Network Architecture
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Prompt Engineering Tools, Generative AI, Prompt Patterns, AI powered creativity, LLM Application, Large Language Modeling
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Vulnerability Assessments, Distributed Denial-Of-Service (DDoS) Attacks, Vulnerability Scanning, Vulnerability Management, Cybersecurity, Malware Protection, Penetration Testing, Cyber Threat Intelligence, Exploitation techniques, Threat Management, Brute-force attacks, Network Security, Information Systems Security, Security Awareness, Human Factors (Security), Authentications, Network Protocols
★ 4.7 (9) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Generative AI Agents, Business Process Automation, Agentic Workflows, Generative AI, Automation, AI Orchestration, OpenAI, Multimodal Prompts, Slack (Software), AI Personalization, AI Integrations, Devops Tools, Human Resources, Performance Metric, Performance Measurement, Key Performance Indicators (KPIs), Google Sheets, Application Programming Interface (API), Scalability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Penetration Testing, Malware Protection, Cyber Security Assessment, Cyber Threat Intelligence, Exploitation techniques, Cybersecurity, Intrusion Detection and Prevention, Email Security, Vulnerability Assessments, Network Security, Human Factors (Security), Network Analysis, Data Persistence
★ 5 (15) · Mixed · Course · 1 - 4 Weeks