
The AARRR framework, also known as Pirate Metrics, was developed by Dave McClure and serves as a roadmap for startups to focus on critical metrics that drive growth. It breaks down the customer lifecycle into five sequential stages: Acquisition, Activation, Retention, Revenue, and Referral. This framework helps businesses to identify weaknesses in the user experience and optimize strategies for each stage, ultimately leading to increased user engagement and profitability.