ACA CCE case studies
ACA CCE · Put your knowledge to work in context.
The ACA CCE (Alibaba Cloud Certified Associate – Cloud Computing Essentials) is an entry-level, multiple-choice certification for people starting out with Alibaba Cloud. It suits developers, sysadmins, pre-sales staff, and students who want a structured first credential before moving on to professional-level tracks. The exam is designed to test breadth rather than deep specialization: core cloud concepts (regions and zones, elasticity, shared responsibility), the main product families (compute, storage, networking, databases), Alibaba Cloud's AI and model services, and the practical side of running an account - security controls, billing, and support channels. Preparation works best in layers. The ACA CCE case studies are 5 cases and about 2,659 words.
1Choosing Between ECS Instance Families for a Bursty Batch Workload
A genomics team runs a nightly variant-calling pipeline on Alibaba Cloud. Each job is a short-lived, CPU-heavy batch that runs for 12-25 minutes, all cores busy, then terminates.
494 words, about 2 min2Diagnosing Slow Queries After Migrating to ApsaraDB RDS
An e-commerce team migrated its order database from self-managed MySQL on ECS to an ApsaraDB RDS for MySQL instance. Before migration, p99 read latency was 8 ms.
566 words, about 3 min3Grounded RAG Service on Model Studio: Quality vs Cost
A support team is building a retrieval-augmented assistant on Alibaba Cloud Model Studio (Bailian). The knowledge base is 40,000 internal help articles.
531 words, about 3 min4Least-Privilege Access for a Cross-Team Data Platform
A company runs a shared data platform on Alibaba Cloud. Three teams need access: analysts need read-only access to OSS buckets holding processed data; an ETL service running on ECS needs to read raw buckets and write processed buckets; a contractor needs temporary access to one specific bucket for two weeks.
515 words, about 3 min5Cost Spike Investigation and Commitment Decision
A SaaS company's monthly Alibaba Cloud bill jumped from about 30,000 to 52,000 CNY in one month with no planned launch. The bill is dominated by ECS (pay-as-you-go), OSS storage and requests, and NAT Gateway.
553 words, about 3 min