Cloud computing, AWS architecture, modern data center, three-tier architecture, scalable design, reliability pillar, security pillar, performance efficiency pillar, cost optimization pillar, well-architected framework, cloud formation template, infrastructure as code, DevOps practices, monitoring and logging, automated deployment, containerization, microservices architecture, distributed systems, real-time data processing, high availability, disaster recovery, backup and storage, virtual private cloud, hybrid cloud, multi-cloud strategy, abstracted infrastructure, cloud-native applications.