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Storage resilience

Core

Blob object replication

Asynchronous object replication between block blob accounts.

Key points

  • Asynchronously copies supported block blobs between source and destination containers.
  • Policies contain source-to-destination container rules and optional filters.
  • Requires blob versioning on both accounts and change feed on the source; both accounts must be general-purpose v2 or premium block blob accounts, and only block blobs are supported.

Best-known use cases

  • Copy selected blobs to an analytics account.
  • Maintain an object copy under a different account boundary.

What candidates often confuse it with

  • Object replication vs GRS: administrator-selected object policy vs platform-managed account redundancy.
  • Replication policy vs lifecycle policy: copy matching objects vs tier or delete aging objects.

Key takeaway

Use object replication for selective asynchronous block-blob copying between accounts, not for general account durability.

Related services

  • Azure Storage redundancy

Relevant exam tasks

  • D2.2.S2 — Configure Azure Storage redundancy
  • D2.2.S3 — Configure object replication

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Exam Weights

Exam snapshot

AZ-104 at a glance

Level
Intermediate
Duration
100 minutes
Questions
No fixed live question count published
Formats
No guaranteed question-type mix
Scoring
1–1,000 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-104. This lane counts multiple-choice and multiple-response items as exam-style practice. Ordering, matching, and case-study items are supplemental site exercises and do not count toward exam-style accuracy. Practice percentages do not reproduce Microsoft's scaled scoring, and difficulty labels describe this site's Intermediate-level scenario complexity rather than a Microsoft-published question rating.

Reference

AZ-104 topics and reference map

Study links

AZ-104 resources

Official Microsoft resources

AZ-104 official study guide

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

Azure Administrator Associate certification

Official certification overview, assessment duration, practice assessment, exam sandbox, and scheduling path.

AZ-104T00 Microsoft Azure Administrator course

Official instructor-led course and training path for Azure administrators preparing for AZ-104.