Agribuys, a leading supply chain integrator for the global food industry, has promoted Vijay Yajnik to CEO and president. He has also been elected to the board of directors of the company. Yajnik joined Agribuys this January as president and COO.   Doug Alexander, Agribuys board member and managing director at Internet Capital Group, commented: "Vijay has demonstrated a commanding grasp of what it takes to service complex multinational clients.