Strategy, Tactics and the Purchasing process

Format is as follows:
Provide examples and analysis on the Purchasing Process, its longer-term strategies and its shorter term
tactics.
Background Information about the Subject matter. Purchasing Strategies and Tactics.
Body of Paper - Detailed explanation of some strategies and tactics. Do you see advantages and
disadvantages of either? When do strategies fit, when do tactics fit?
Summary or Conclusion - Summarize your thoughts and findings.