42 Software as a service (SaaS), featuring software for use in evaluating users' skills and making personalized learning recommendations in the field of data science, analytics, computer programming, machine learning, and statistics; software as a service (SAAS), featuring software for skills assessment, testing, and learning management in the field of data science, analytics, computer programming, machine learning, and statistics; software as a service (SAAS), featuring computerized adaptive testing software for use in evaluating users' skills and making personalized learning recommendations in the fields of data science, analytics, computer programming, machine learning, and statistics; software as a service (SAAS), featuring software for accessing online courses in the field of data science, analytics, computer programming, machine learning, and statistics; software as a service (SAAS), featuring software for tracking, measuring, reporting, and analyzing skills development in the field of data science, analytics, computer programming, machine learning, and statistics for purposes of evaluating users' skills, making personalized learning recommendations; creating an online community for participants in online courses in the field of data science, analytics, computer programming, machine learning, and statistics users to take part in data science discussions and coding challenges; providing authoring tools, namely, non-downloadable software authoring for online content creation