Dear Bidder, United Nations Educational, Science and Cultural Organization (UNESCO) hereby invite qualified companies to submit sealed tenders as follows: Invitation to Bid (ITB) for the Modernization of the EdWay Platform for teacher professional development in Ukraine. The purpose of this notice is to provide general information on the requirements for the procurement process and to inform interested suppliers how to obtain a copy of the Solicitation Documents. Interested companies who wish to participate in the ITB must request a complete set of Solicitation Documents, available free of charge, from UNESCO, contact person at the address shown below. The Electronic Bids must be delivered to the [email protected] on or before 13 October 2025 at 16:00 (Kyiv time), in strict compliance with the instructions as stipulated in the Solicitation Documents. UNESCO reserves the right to amend the documents at any time during the solicitation process. Any amendments or clarifications will be communicated directly to all Bidders who have requested for a complete set of solicitation documents and officially confirmed their intention to submit a sealed tender. No remuneration will be made to companies for preparation and submission of their tenders.