• Build-Measure-Learn loop – rapidly test ideas and learn from real customer feedback
• Minimum Viable Product (MVP) – launch early with a basic version to validate assumptions
• Pivot or Persevere – adjust strategy based on validated learning
• Innovation accounting – measure progress using actionable metrics rather than vanity metrics

Why it’s significant:
The Lean Startup has reshaped how entrepreneurs approach launching businesses in uncertain markets. Its focus on experimentation, agility, and continuous improvement has influenced startups, established companies, and innovation-driven industries worldwide.