This volume constitutes the proceedings of the 4th International Conference on E-Technologies
MCETECH 2009 held in Ottawa Canada during May 4-6 2009. The 23 full and 4 short papers
included in this volume were carefully reviewed and selected from a total of 42 submissions.
They cover topics such as inter-organzational processes service-oriented architectures
security and trust middleware infrastructures open source and open environments and
applications including eGovernment eEducation and eHealth.
