Companies today are forced to transform almost continuously--leaving managers faced with difficult questions. How soon can you initiate change as a new hire? Should you merge cultures after an acquisition? How can you create lasting results when the majority of change efforts fail? See how leading management experts weigh in on these and other crucial issues and find answers to your toughest challenges in this collection of the most popular Harvard Business Review cases. The HBR Case Studies series Every day, managers face challenges that put them to the test. When it comes to the thorniest dilemmas, there's never just one right answer. Get the guidance you need from our new HBR Case Studies series. Straight from the pages of the Harvard Business Review, each book breaks down your most familiar--and formidable--business problems. You'll get six engaging scenarios, each with several detailed solutions by today's leading experts. Read the cases, gain more perspective, and hone your instincts--so you can finalize your plan and move forward more successfully.