ABSTRACT
In the modern world, e-learning has become a fact of life. No one disputes whether e-learning should be applied or not. The only questions are how and when it should be applied. Most of the basic technologies are available, and the pedagogical principles have been worked out to a certain extent. There are different business models available for e-learning, and the content can be transformed to be delivered electronically. Although this sounds rather promising, in fact there is little knowledge in the field of how to integrate all these different approaches and technologies in order to create the best possible e-learning solution for the many different needs and situations. There is a lack of integration and harmonization in the e-learning field, and even very basic theories and models about e-learning are in short supply, leading to a great deal of conceptual confusion which hinders implementation and the further development of the field.
