Development 111 Examinations 108 Certification 103 Application software 98 Electronic data processing personnel 88 Computer networks 85 Cloud computing 56 Java (Computer program language) 53 Security measures 39 Management 37 Python (Computer program language) 36 Computer security 35 Linux 35 Operating systems (Computers) 33 Machine learning 28 Computer software 26 Web site development 25 Database management 23 Design 20 JavaScript (Computer program language) 20 Amazon Web Services (Firm) 18 Client/server computing 18 Application program interfaces (Computer software) 16 Information technology 16 Web applications 16 Computer programming 15 Web sites 15 Data mining 13 Data processing 13 Electronic data processing 13