Any learning that you can access by electronic means such as videoconferencing, CD-ROMs and computer-based learning tools, to name just a few.
(Canada School of Public Service)
Today's e-learning also takes advantage of Internet and organization intranet connectivity. E-learning activities often combine several technologies such as electronic documents, video and audio clips, animation, email chat, discussion forums, online whiteboards, online mentors, etc.
E-learning is focused on the learner who has control of how she/he selects plans and participates in learning opportunities. E-learning happens in many ways, from informally acquiring information to participating in a structured online learning event coordinated by an instructor.