1. The Programme shall be implemented, as appropriate, in a phased approach until the completion of the activities set out in Article 4. The Commission, in coordination with the Member States, shall ensure that the procurement approach allows for the widest competition possible in order to foster appropriate participation of the entire industrial value chain for the contracts related to the provision of the services referred to in Article 10(1) and the contracts related to the purchase of the services referred to in Article 10(2).