Global sourcing is often associated with a centralized procurement strategy for a multinational, wherein a central buying organization seeks economies of scale through corporate-wide standardization and benchmarking. A definition focused on this aspect of global sourcing is: "proactively integrating and coordinating common items and materials, processes, designs, technologies, and suppliers across worldwide purchasing, engineering, and operating locations (p. 304)"
The global sourcing of goods and services has advantages and disadvantages that can go beyond low cost. Some advantages of global sourcing, beyond low cost, include: learning how to do business in a potential market, tapping into skills or resources unavailable domestically, developing alternate supplier/vendor sources to stimulate competition, and increasing total supply capacity. Some key disadvantages of global sourcing can include: hidden costs associated with different cultures and time zones, exposure to financial and political risks in countries with (often) emerging economies, increased risk of the loss of intellectual property, and increased monitoring costs relative to domestic supply. For manufactured goods, some key disadvantages include long lead times, the risk of port shutdowns interrupting supply, and the difficulty of monitoring product quality.

Sources:Wikipedia