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.

Skills you'll gain: GitHub Copilot, Integrated Development Environments, Microsoft Visual Studio, AI Enablement, Development Environment, Debugging, HTML and CSS, React.js, Cascading Style Sheets (CSS), Software Installation
★ 4.3 (27) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: MITRE ATT&CK Framework, Vulnerability Assessments, Open Web Application Security Project (OWASP), Distributed Denial-Of-Service (DDoS) Attacks, Vulnerability Scanning, Vulnerability Management, Threat Modeling, Cybersecurity, Malware Protection, Mobile Security, Cyber Threat Intelligence, Penetration Testing, Exploitation techniques, Brute-force attacks, Network Security, Cryptography, Threat Management, Information Systems Security, Threat Detection, Cloud Security
★ 4.8 (31) · Beginner · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Model View Controller, Spring Framework, Restful API, Spring Boot, Web Services, Frontend Integration, JSON, YAML, Web Applications, Configuration Management, Angular, Java Programming, Software Architecture, Extensible Markup Language (XML)
★ 4.1 (224) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: AI Integrations, Cloud Deployment, Cloud Applications, Cloud Development, Application Deployment, API Gateway, OpenAI API, Cloud Hosting, Cloud Security, Application Programming Interface (API), LLM Application, Cloud Technologies, OpenAI, Distributed Computing, Performance Tuning
★ 4.8 (28) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Google Gemini, Gemini, Software Development Life Cycle, Systems Development Life Cycle, Google Cloud Platform, Development Testing, AI Integrations, Application Development, Test Case, Query Languages, Debugging
★ 4.9 (10) · Beginner · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Sampling (Statistics), Descriptive Statistics, Data Presentation, Statistics, Estimation, Probability, Data-Driven Decision-Making, Probability & Statistics, Statistical Inference, Statistical Hypothesis Testing, Probability Distribution, Data Visualization, Data Analysis, Histogram, Graphing
★ 3.8 (316) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Fine-tuning, Large Language Modeling, Natural Language Processing, LLM Application, Generative AI Agents, Agentic Workflows, Decision Intelligence, Test Case, Agentic systems, User Interface (UI), Performance Testing, Model Training, Applied Machine Learning, Artificial Intelligence, Model Optimization, Machine Learning Algorithms, Classification Algorithms, Decision Support Systems, Model Evaluation
★ 4.3 (16) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Generative AI Agents, LangChain, AI Workflows, LLM Application, Agentic systems, Agentic Workflows, Development Environment, Model Evaluation, Artificial Intelligence, AI literacy, Scalability, Performance Tuning, Model Optimization, Design
★ 4.5 (96) · Intermediate · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Model Context Protocol, AI Orchestration, AI Workflows, Model Deployment, AI Personalization, OpenAI API, OpenAI, AI Integrations, Cloud Deployment, Agentic Workflows, Agentic systems, Application Deployment, Generative AI Agents, Cloud API, ChatGPT, CI/CD, Responsible AI, Artificial Intelligence, Generative AI, Development Testing
Intermediate · Course · 1 - 4 Weeks
University of Minnesota
Skills you'll gain: Model Evaluation, Decision Support Systems, Business Metrics, Test Data, Performance Metric, Data Collection, Performance Measurement, Benchmarking, A/B Testing, Data-Driven Decision-Making, Predictive Analytics, Product Assortment
★ 4.4 (236) · Mixed · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Lean Manufacturing, Lean Six Sigma, Process Mapping, Statistical Process Controls, Six Sigma Methodology, Failure Mode And Effects Analysis, Process Flow Diagrams, Process Analysis, Kaizen Methodology, Quality Improvement, Operational Efficiency, Process Improvement, Performance Measurement, Manufacturing Operations, Quality Management, Operational Excellence, Process Improvement and Optimization, Business Process, Statistical Analysis, Kanban Principles
★ 4.4 (41) · Beginner · Specialization · 1 - 3 Months

Meta
Skills you'll gain: MySQL, Database Development, Django (Web Framework), Query Languages, Database Management, Database Application, SQL, Databases, Stored Procedure, Back-End Web Development, Python Programming, Application Programming Interface (API), Data Management
★ 4.3 (98) · Intermediate · Course · 1 - 4 Weeks