Harvard Business Review 
Developing a Business Case [PDF ebook] 

How do you decide on the best course of action for your company to take advantage of new opportunities? By building a business case.

This book provides a framework for building a business case. You’ll learn how to:

Clearly define the opportunity you’ll want to address in your business case

Identify and analyze a range of alternatives

Recommend one option and assess its risks

Create a high-level implementation plan for your proposed alternative

Communicate your case to key stakeholders