 Welcome to the MicroMasters in supply chain management and thank you for joining our third course of the series. My name is Sergio Caballero and I'm the course lead of SC2X supply chain design. SC2X covers all aspects involved in the design of supply chains for companies and organizations anywhere in the world. The course is divided into four main topic areas. Physical flow design, information flow design, supply chain finance and organization design. This is my favorite course and you will see that you will apply many of the concepts and tools you've learned in previous courses. Now let me tell you more about myself. I'm originally from Sucre, capital of Bolivia, a small city located in the heart of South America. Sucre is also known as the white city thanks to all the white buildings and churches. Regarding my research, I've been part of the MIT Megacity Logistics Lab, a pioneering initiative in the field of urban logistics since 2013. My research focused on multi-tier distribution network design, last mile delivery, data analytics and high resolution modeling. Currently I'm also part of the MIT Freight Transportation Lab, an initiative that envisions better ways to design and improve large-scale freight transportation systems. Thanks again for joining us in this journey. I'm pretty sure that you will enjoy SC2X. Hope to see you soon in discussion forum. Enjoy the course.