Information retrieval courses can help you learn search algorithms, indexing techniques, and data mining strategies. You can build skills in evaluating search results, optimizing query performance, and understanding user intent. Many courses introduce tools like Elasticsearch, Apache Solr, and various machine learning libraries, showing how these technologies enhance information retrieval processes and improve the accuracy of search results.

Johns Hopkins University
Skills you'll gain: Calculus, Applied Mathematics, Data Modeling, Model Optimization, Estimation, Graphing, Mathematical Modeling, Data Analysis Software, Algebra, Cost Estimation, Mathematical Software, Linear Algebra, Trigonometry, General Mathematics, Advanced Mathematics, Analysis, Derivatives, Mathematical Theory & Analysis, Geometry, Data Analysis
★ 4.8 (392) · Intermediate · Specialization · 3 - 6 Months
The University of Hong Kong
Skills you'll gain: Journalism, digital literacy, Media and Communications, Research, Investigation, Digital Communications, Ethical Standards And Conduct
★ 4.8 (236) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Internet Of Things, Security Engineering, Information Systems Security, Wireless Networks, Infrastructure Security, General Networking, Network Security, Cybersecurity, Security Controls, IBM Cloud, Computing Platforms, Cloud Platforms, Cryptography, Advanced Encryption Standard (AES), Network Protocols, Market Opportunities, Automation, Emerging Technologies, Endpoint Security
★ 4.7 (626) · Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Amazon Web Services, Amazon S3, Amazon Elastic Compute Cloud, Amazon Redshift, Cloud Hosting, Amazon DynamoDB, Cloud Services, Cloud Engineering, Cloud Infrastructure, Cloud Storage, Database Administration, Cloud Deployment, Cloud Computing Architecture, Databases, Network Planning And Design, Virtual Networking, Servers, Database Management, Network Infrastructure, Cloud Security
★ 4.4 (17) · Beginner · Course · 1 - 4 Weeks

Case Western Reserve University
Skills you'll gain: Nutrition and Diet, Meal Planning And Preparation, Nutrition Education, Goal Setting, Behavioral Management, Overcoming Obstacles, Smart Goals, Habit Formation, Behavior Management, Exercise Science, Chronic Diseases, Self-Awareness
★ 4 (578) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Database Design, Software Design, Application Security, User Experience Design, Vulnerability Assessments, Database Theory, Unified Modeling Language, Unit Testing, Usability, UI/UX Research, Threat Modeling, Usability Testing, User Interface and User Experience (UI/UX) Design, Vulnerability Management, Data Flow Diagrams (DFDs), Relational Databases, Software Visualization, Security Software, Systems Development Life Cycle, Software Development Life Cycle
★ 4.6 (438) · Beginner · Specialization · 3 - 6 Months

LearnKartS
Skills you'll gain: Billing, Amazon Web Services, Cost Reduction, Cost Management, Cost Estimation, Cloud Management, Cloud Storage, Cloud Services, Product Support, Technical Support, Customer Support
★ 4.6 (22) · Intermediate · Course · 1 - 4 Weeks

Splunk Inc.
Skills you'll gain: Data Modeling, Splunk, Pivot Tables And Charts, Data Management, Query Languages, Performance Tuning, Data Science, Data Analysis, Big Data, Business Intelligence, Business Analytics, Geospatial Information and Technology
★ 4.8 (20) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: GitLab, CI/CD, Application Deployment, Continuous Integration, DevOps, Build Tools, Continuous Delivery, Continuous Deployment, Security Testing, Test Automation, Vulnerability Scanning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AWS CloudFormation, Devops Tools, Kubernetes, DevOps, Amazon Web Services, AWS Identity and Access Management (IAM), Identity and Access Management, Cloud Infrastructure, Infrastructure as Code (IaC), Virtual Networking, Cloud Computing, Command-Line Interface
★ 4.5 (20) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Endpoint Detection and Response, Network Administration, Cryptographic Protocols, IT Security Architecture, Cloud Security, Data Loss Prevention, Cloud Deployment, Cyber Attacks, Security Controls, Infrastructure Security, Computer Security, Encryption, Cloud Computing, Authorization (Computing), Network Planning And Design, Identity and Access Management, System Configuration, Data Security, Authentications, Malware Protection
★ 4.9 (10) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: AI Workflows, Agentic Workflows, Generative AI Agents, AI Orchestration, Model Deployment, Automation, No-Code Development, AI Integrations, Prompt Engineering, Process Optimization, System Monitoring, Performance Analysis, Performance Management
Intermediate · Course · 1 - 4 Weeks