The efficient management in Digital e-Library Warehouse (DLW) causes the wide challenges from modern architecture design to advanced customization and personalization. The paper provides the multi-level content-dependent architecture of DLW. Also EPUB (Electronic PUBlication) format extensions were investigated which prefer good multimedia possibilities based on advanced visualization technologies especially for end users working in groups. The usability of DLW is based on skill acquisition with collaboration of advanced software/hardware technologies. The experimental tests on vulnerabilities permitted to choice a more appropriative decision – Content Management System Bitrix Framework as a middleware into proposed multilevel architecture of DLW.