Varun's response is not relevant to the question asked. The interviewer requested details about a complex data pipeline project involving Microsoft Azure or GCP services, including the challenges faced and solutions implemented. Varun's one-word response does not provide any information on his experience, knowledge, or problem-solving skills related to data pipeline development. Varun should provide a comprehensive description of a relevant project, detailing the architecture, technologies used, challenges encountered, and the strategies employed to overcome those challenges.