Explain the following practices and how they enhance the operations and project managemenet functionalities in a business:

Explain the following practices and how they enhance the operations and project managemenet functionalities in a business:

User Involvement
Executive Management Support
Experienced Project Manager
Clear Business Objectives
Minimizing Scope. The Standish Group also states that time is the enemy of all projects and scope equals time.
Agile Requirements Process
Standard software infrastructure
Formal project methodology
Reliable estimates
Skilled staff
Effective tools: project management, requirements and quality