Key activities are the crucial actions a company must take to operate successfully and deliver its value proposition. These activities vary by industry and business model, encompassing core processes like production, problem-solving, and platform management that directly contribute to competitive advantage and market differentiation. Identifying key activities involves analyzing the value proposition, resources, and customer segments. The Business Model Canvas positions key activities centrally, highlighting their connections to other components. Successful examples include Apple's focus on design and Amazon's efficient logistics, while common pitfalls include neglecting alignment with the value proposition and overlooking outsourcing opportunities.