Cloud computing has become a dominant paradigm for delivering scalable, reliable, and cost-effective services to a wide range of customers. However, building enterprise-grade architectures in the cloud poses many challenges and requires careful design decisions. In this technical session, we will look at some of the lessons learned from my experience in developing and deploying cloud-based solutions for various domains and scenarios. We'll cover topics such as security, performance, availability, scalability, and best practices for cloud-native applications. We will also discuss some of the common pitfalls and trade-offs that need to be considered when moving to the cloud.