In today's global environment, many organizations utilize outsourcing as a strategic
part of their business operations. Outsourcing allows an organization to concentrate
their internal resources on their core competency, while leveraging the skills of their
suppliers to improve their support functions. Once the decision to outsource is made, suppliers
must be selected to accomplish the outsourcing function. Supplier selection is one of
the primary keys to successful supply chain management. Many organizations have pursued
a reduced supplier base or even sole sourcing. Using multiple suppliers for a given
product or service compromises an organization's ability to capitalize on economy of scale
through volume purchases. A single supplier reduces variation in the product or service
being delivered, since there is only one source for delivery. There is a great deal of
literature devoted to the subject and many techniques have been developed to support the
supplier selection process. When selecting a supplier, many factors must be considered.
Certainly, purchase price is a major consideration, because it has such a significant impact on
final product cost. However, other factors are also considered. Quality, Lead time and
Service are often identified as decision factors along with cost (Liao and Kao, 2010). Selecting
the `right' supplier is a strategic supply chain decision that has a major impact on the
overall success or failure of the supply chain. Several methods have been developed to aide
in supplier selection. A brief summary of common models is detailed below.
Each supplier's performance is evaluated in categorical terms such as `good', `fair', or
`poor' as related to various attributes. The supplier receiving the most `good' ratings is
selected. This procedure is very easy to implement, but has shortcomings. Each attribute is
weighted equally. In reality, some attributes are more important than others. The evaluation
process is subjective, not quantitative and is based entirely on the opinion of the evaluator. |