GregLab | Exam Prep

NoSQL data

Core

Azure Cosmos DB

Globally distributed NoSQL database with multiple APIs and tunable consistency.

Key points

  • Cosmos DB distributes NoSQL data using a partition key and configurable consistency.
  • Partition distribution, region topology, request patterns, and consistency choices determine scale and behavior.

Best-known use cases

  • Serve globally distributed JSON or device data through predictable key-based access.

What candidates often confuse it with

  • Cosmos DB is a globally distributed NoSQL service; Azure SQL services provide relational constraints and joins.

Key takeaway

Choose Cosmos DB when the application needs distributed NoSQL access with an explicit partition and consistency design.

Relevant exam tasks

  • D2.2.S1 — Recommend a solution for storing semi-structured data
  • D3.2.S3 — Recommend a high availability solution for semi-structured and unstructured data

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Free Microsoft Certified: Azure Solutions Architect Expert prep

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Exam Weights

Exam snapshot

AZ-305 at a glance

Level
Expert
Duration
No fixed live duration published
Questions
No fixed live question count published
Formats
No guaranteed question-type mix
Scoring
Scaled score; 700 minimum passing score

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Exam fidelity: Microsoft does not publish a fixed live question count or guarantee a question-type mix for AZ-305. This lane contains multiple-choice exam-style practice; no supplemental matching, ordering, or case-study exercises were needed. Practice percentages do not reproduce Microsoft's scaled scoring, and difficulty labels describe this site's Expert-level architecture and trade-off complexity rather than a Microsoft-published question rating.

Reference

AZ-305 topics and reference map

Study links

AZ-305 resources

Official Microsoft resources

AZ-305 official study guide

The live Microsoft guide with the April 17, 2026 skills-measured date, domain ranges, and 49 detailed objectives.

AZ-305 official exam page

Official exam status, passing score, language availability, preparation resources, and scheduling path.

Azure Solutions Architect Expert certification

Official certification overview, role profile, certification requirement, and learning paths.

AZ-305T00-A Design Microsoft Azure Infrastructure Solutions course

Official four-day instructor-led architecture course for AZ-305 preparation.