In this research, we study a two-level make-to-order supply chain composed of one manufacturer and one supplier. We mathematically model and analyze the manufacturer's ordering policies, vendor's manufacturing and order fulfillment processes under different integration strategies. Our objective is to measure the value of information sharing and coordination in this supply chain across these strategies. The experimental results indicate a 22.76% cost reduction moving from a traditional supply chain to a fully integrated supply chain, and the times of manufacturer's purchasing, supplier's setup and delivering are reduced as well. While information sharing can reduce system cost, the main benefit comes from coordination. The benefits are not allocated equally among the members, and vary by strategy.