ACA CCO case studies
ACA CCO · Put your knowledge to work in context.
The ACA CCO (Alibaba Cloud Certified Associate – Cloud Computing Operations) is an entry-level credential for people who build and run workloads on Alibaba Cloud rather than design them from scratch. It suits cloud operations engineers, junior system administrators, support staff and developers who need a working command of the platform's core services. The ACA CCO case studies are 5 cases and about 3,042 words.
1Choosing a Deployment Model Under Data-Residency and Burst Constraints
A regional hospital network runs its patient-records system on 6 physical servers in its own data center. Regulatory rules require that identifiable patient data never leave the country, but the rules permit encrypted backups to be stored abroad.
588 words, about 3 min2Right-Sizing an ECS Fleet After a Noisy-Neighbor Incident
A web application runs on 12 ECS instances behind a load balancer: 8 general-purpose instances (4 vCPU, 16 GiB) for the app tier and 4 memory-optimized instances (8 vCPU, 64 GiB) for a caching tier. Monitoring shows the app tier averaging 18% CPU with brief spikes to 70%, while the cache tier averages 55% CPU and 80% memory.
620 words, about 3 min3Load Balancer Health Checks Behind a Content Delivery Layer
A media company serves a video-on-demand site through a content delivery network in front of an application load balancer. Origin servers are ECS instances in two zones.
612 words, about 3 min4Storage Tier and Database Consistency for a Bursty Ingest Pipeline
An IoT company ingests telemetry from 20,000 sensors. Each sensor sends one 2 KB message every 10 seconds, producing roughly 345 million messages per day.
599 words, about 3 min5Cross-Account Access and Key Management for a Contractor Team
A company runs production in one cloud account and a shared services account for logging and CI/CD. Twelve contract developers need read access to production logs and permission to deploy to a staging environment in the production account.
623 words, about 3 min