In the session 'How Nykaa Built a Data Lake for Clickstream Data and Leveraged AWS for Their AdTech Platform,' Mayank Jaiswal, Distinguished Engineer at Nykaa, and Shiv Pratap Singh, Engineer at Nykaa, highlighted the critical role of Amazon Web Services (AWS) in Nykaa's data-driven transformation. AWS services like Kinesis, API Gateway, and Kinesis Firehose enable Nykaa to manage vast data volumes, delivering personalisation, targeted advertising, and real-time ad optimisation. Their architecture emphasizes simplicity and maintenance, underscoring AWS's contribution to Nykaa's operational success.