Elastic Compute Service (ECS) by Alibaba Cloud is a high-performance, scalable IaaS service that eliminates upfront hardware investment. It offers diverse computing capabilities, ease of use, cost optimization, elasticity, reliability, and security. ECS supports various instance types, architectures, and billing methods, including pay-as-you-go, subscription, and preemptible instances. Users can access ECS through the console, API, SDKs, ROS, OOS, and Terraform. Best practices include selecting appropriate regions and zones, ensuring high availability, utilizing VPC for networking, and implementing security measures like security groups and basic security services.

ECS Insight evaluates ECS usage across six dimensions: ECS Basics, Cost Insight, Automation, Reliability, Elasticity, and Security, providing optimization suggestions. Each dimension includes specific assessment items with varying severity levels (Critical, Warning, Information, Unassessed, OK) and corresponding scores. For instance, under ECS Basics, it assesses the proper distribution of ECS instances across zones and regions, checks for instances in the classic network or using retired instance families, and evaluates basic storage and network capabilities. Cost Insight examines billing methods, fine-grained cost management, and resource utilization. Automation assesses the use of automation tools and SDKs for efficient O&M. Reliability evaluates instance stability, performance, and application reliability. Elasticity and Security dimensions similarly provide assessments and recommendations.

Alibaba Cloud's privacy policy covers the use of data on their international website and marketplace platform, including user registration, product/service usage, and data handling practices. Data collected includes contact information, transaction details, and browsing activities. Data is used for registration, customer service, service provision, purchase processing, and legal compliance. Alibaba Cloud may share data with third-party service providers and affiliates within the Alibaba Group for service support and legal purposes. Data security measures are in place, but no internet transmission is fully secure. Users can request access, correction, or deletion of their data. The policy also discusses the use of cookies for tracking and enhancing user experience.