Guerilla usability testing is an informal and cost-effective method that provides genuine user feedback by observing users in natural settings like coffee shops or parks, making it ideal for capturing real-world insights on consumer products. Although it lacks the controlled environment of formal usability testing, its relaxed approach often yields candid feedback from participants, helping identify pain points and opportunities for improvement. The testing process involves defining goals, selecting target users, creating test tasks, and setting up a suitable environment for observation. Analyzing the results helps identify common themes and areas for enhancement, which informs product development. However, guerilla testing may not be suitable for complex or niche products due to its informal nature and smaller sample size, which can limit statistical power and introduce variability. It's crucial to weigh its strengths and limitations against the research goals to determine if a more formal study is necessary. By continuously iterating based on user feedback, product teams can enhance user experience and drive satisfaction.