DP-203 Global e-commerce storage Practice Question
You are designing a hybrid data storage architecture for a global e-commerce platform. Which two Azure services should you combine to achieve low-latency read access for users worldwide and durable archival storage for compliance?
⚠ Common exam trap
Watch out — candidates often confuse Azure Table Storage with Cosmos DB's Table API, assuming Table Storage supports global distribution, when in fact only Cosmos DB's Table API (a different service) provides multi-region replication and low-latency reads.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Cosmos DB
Azure Cosmos DB is correct because it provides globally distributed, multi-region write and read capabilities with turnkey global distribution, enabling low-latency access for users worldwide via its multi-homing API. Azure Blob Storage is correct because it offers durable, tiered archival storage (e.g., Cool, Archive access tiers) at low cost, meeting compliance requirements for long-term retention of data such as transaction logs or invoices.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Table Storage
Why it's wrong here
Table Storage is a single-region service with higher latency.
- ✗
Azure SQL Database
Why it's wrong here
Global distribution requires complex sharding and is not as seamless as Cosmos DB.
- ✗
Azure Files
Why it's wrong here
Not designed for archival or global low-latency reads.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The DP-203 exam frequently reuses these exact scenarios with slightly different constraints.
✓Azure Cosmos DBCorrect answer▾
✗Azure Table StorageWrong answer — click to see why▾
Why this is wrong here
Table Storage is a single-region service with higher latency.
✗Azure SQL DatabaseWrong answer — click to see why▾
Why this is wrong here
Global distribution requires complex sharding and is not as seamless as Cosmos DB.
✗Azure FilesWrong answer — click to see why▾
Why this is wrong here
Not designed for archival or global low-latency reads.
Analysis generated from the official DP-203blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Quick reference
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-203 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-203 exam.