A literature review is a way for you to learn what others think and have research related to your topic.You will complete the following steps: 1  Find research articles. 2  Read and take notes. 3  Cite your sources.  Write a literature review.
A vendor, or a supplier, is a supply chain management term that means anyone who provides goods or services to a company or individuals. A vendor often manufactures inventoriable items, and sells those items to a customer. Typically vendors are tracked in either a finance system or a warehouse management system.
Retailers are vendors of products to consumers. In information technology as well as in other industries, the term is commonly applied to suppliers of goods and services to other companies. A tier 1 vendor is a large and well-known vendor, often enjoying national or international recognition and acceptance.Tier 1 vendors may be both manufacturers and value-added resellers (VAR s). A tier 2 vendor is a smaller and less well-known provider that is often also limited in its geographic coverage as well.n information technology as well as in other industries, the term is commonly applied to suppliers of goods and services to other companies. A tier 1 vendor is a large and well-known vendor, often enjoying national or international recognition and acceptance.