AZ-305 preparation is effective when it treats the exam as an architecture design assessment rather than a simple recall exercise for Azure services. Weak preparation often comes from overlooking design judgement, trade-offs, constraints, and the need to choose the most suitable architecture for a given scenario.
AZ-305 is the Microsoft exam for designing Microsoft Azure infrastructure solutions, and it is one of the exams associated with earning the Microsoft Certified: Azure Solutions Architect Expert certification. Last updated for this guide: 2026, aligned to the current AZ-305 skills outline published by Microsoft Learn at the time of writing; candidates should always check the live exam page and downloadable skills outline before booking, because Microsoft updates exam objectives when Azure services and design guidance change.
The exam is aimed at people who already understand cloud infrastructure and can reason across identity, networking, storage, compute, monitoring, governance, and business continuity. Someone coming from AWS or Google Cloud can use AZ-305 as a structured route into Azure architecture, but the strongest preparation comes from translating existing cloud knowledge into Azure-specific design decisions rather than treating Azure as a list of service names.
What AZ-305 Measures in Practice
The official AZ-305 blueprint is organised around four broad design areas: identity, governance and monitoring; data storage; infrastructure; and business continuity. In daily architecture work, those domains show up as landing zone design, role-based access decisions, Azure Policy guardrails, workload placement, data redundancy choices, network connectivity, and recovery planning.
Microsoft’s Azure documentation is useful because it shows how individual services behave, but AZ-305 requires a wider view. A candidate may need to decide whether a workload belongs on Azure App Service, virtual machines, containers, or AKS; whether data should use zone-redundant, geo-redundant, or read-access geo-redundant storage; and whether a governance control should be enforced through management groups, RBAC, Azure Policy, or a combination of these.
Governance deserves particular attention because it is easy to under-study. Azure Policy is not a theoretical compliance topic in AZ-305 preparation; it affects how organisations restrict regions, require tags, enforce secure configurations, and prevent teams from creating resources that violate standards. Candidates should study the Azure Policy overview and then practise applying policies to real subscription and resource group scenarios, including the operational impact of deny, audit, and deploy-if-not-exists effects.
Cost modelling is another area where architecture candidates often lose precision. The exam may not ask a candidate to build a spreadsheet, but design choices carry cost consequences. Using the Azure Pricing Calculator during study helps candidates defend choices around redundancy, reserved capacity, network egress, storage tiers, and compute sizing. In practice, an architect who cannot explain cost trade-offs will struggle to justify a design, even if the technical components are valid.
How AZ-104 Fits with AZ-305
A common source of confusion is the relationship between AZ-104 and AZ-305. AZ-104 is not required in order to sit the AZ-305 exam, but both AZ-104 and AZ-305 are required for the Azure Solutions Architect Expert certification to be awarded. The exams can be scheduled independently; the certification is granted once Microsoft records that both requirements have been met.
The practical sequence depends on current experience. Candidates with strong Azure administration experience may study AZ-305 first to focus on design-level decision-making, then complete AZ-104 to close any administration gaps required for the certification. Candidates who have cloud experience but limited Azure administration exposure usually benefit from taking AZ-104 first, because AZ-305 assumes confidence with subscriptions, networking, identity, monitoring, storage, and core operational tasks.
This distinction matters because AZ-305 is less forgiving when the underlying platform knowledge is weak. A candidate who has never configured a virtual network, private endpoint, recovery vault, managed identity, or policy assignment may understand the wording of a design question but miss the operational constraint hidden inside it.
How Difficult Is AZ-305?
AZ-305 is an expert-level exam because the questions often present several technically possible answers. The task is to identify the most appropriate option based on requirements such as compliance, availability, cost, operational complexity, recovery objectives, and existing constraints.
For example, a web workload could run on virtual machines, App Service, containers, or Kubernetes. The right answer depends on details such as scaling needs, operating system control, deployment model, networking, compliance boundaries, and the team’s ability to operate the platform. This is why memorising “which service does what” is not enough; candidates need to practise eliminating options that fail a requirement or introduce an unnecessary operational burden.
Case-study-style items are especially important to prepare for. These questions reward careful reading: business requirements, technical requirements, existing environment details, and stated constraints all matter. A useful exam habit is to decide what must be true before looking at the answers, then compare each option against the non-negotiable requirements, risks, and trade-offs.
A Six-Week, Labs-First Study Plan
A four-to-six-week plan is realistic for experienced Azure administrators or cloud engineers who can study consistently. Candidates with weaker Azure foundations may need more time, especially if they also need AZ-104-level administration practice. The plan below assumes the candidate already understands basic cloud concepts and can spend focused time each week on both reading and hands-on work.
- Week 1: Read the current Microsoft Learn AZ-305 exam page and skills outline, then build a simple landing zone with subscriptions, resource groups, RBAC assignments, budgets, and naming conventions.
- Week 2: Design identity and governance scenarios using Microsoft Entra ID concepts, management groups, Azure Policy, monitoring requirements, and assumptions about regulatory or regional constraints.
- Week 3: Compare storage and database designs by modelling durability, latency, replication, partitioning, backup, and restore requirements for different application patterns.
- Week 4: Build infrastructure options for the same workload using App Service, virtual machines, containers, and network isolation patterns, then document why one option is preferred.
- Week 5: Practise business continuity design by setting RPO and RTO targets, choosing backup and disaster recovery approaches, and testing how design choices change under budget pressure.
- Week 6: Review weak areas, redo labs from memory, create short decision records for each architecture scenario, and complete timed practice questions using the official skills outline as the checklist.
The value of this plan is the repeated build, break, and rebuild cycle. A candidate should not simply deploy a service and move on; each lab should include an assumptions log, a short design decision record, and a review of what would change if the business required lower cost, stronger recovery, stricter governance, or faster deployment. Readynez covers this type of scenario-led preparation in its AZ-305 Azure Solutions Architect course, but the principle applies to any serious study route: architecture skill improves when decisions are defended under constraints.
A Practical Reference Architecture to Study
One useful AZ-305 study scenario is a hub-and-spoke Azure design for an organisation migrating an internal web application. The hub virtual network contains shared connectivity, firewalling, DNS, and monitoring. Spoke networks contain application, data, and integration workloads. Identity is centralised through Microsoft Entra ID, privileged access is restricted through RBAC, and Azure Policy is assigned at management group or subscription level to enforce required tags, allowed regions, and baseline security settings.
The assumptions in this scenario are deliberately simple: the organisation has multiple application teams, needs separation between shared services and workloads, must control regional deployment, and wants a repeatable model for future applications. The trade-offs are where learning happens. A hub-and-spoke pattern can improve governance and network control, but it also introduces routing, firewall, and ownership decisions that must be documented. A simpler design may be easier to operate for a small environment, while a more controlled design may be necessary for regulated workloads.
This type of scenario maps directly to the AZ-305 blueprint. Identity and governance appear through RBAC, policy, and monitoring. Data design appears when the application needs backup, replication, retention, and restore decisions. Infrastructure design appears through compute, networking, and integration choices. Business continuity appears when the architect must decide how much downtime and data loss the business can tolerate.
Common AZ-305 Preparation Mistakes
The most common mistake is preparing as if the exam asks for isolated definitions. Knowing that ExpressRoute provides private connectivity is useful, but AZ-305 expects candidates to understand when private connectivity is justified, how it compares with VPN options, what operational dependencies it introduces, and how it affects resilience and cost.
A second mistake is ignoring governance until the final week. Governance is not a side topic for architects; it shapes what teams are allowed to deploy and how platforms remain consistent over time. Candidates should practise policy assignment, exemption thinking, tagging strategy, role design, logging requirements, and monitoring alerts early in their study plan.
A third mistake is weak data redundancy reasoning. Candidates often remember the storage redundancy names but fail to connect them to recovery objectives, read access, regional failure assumptions, latency, and cost. A stronger approach is to write down the business requirement first, then choose the redundancy model that satisfies it without over-engineering.
Another frequent weakness is cost modelling. Architecture answers often look similar until cost, operational effort, or supportability is considered. Using the pricing calculator during study encourages the habit of asking whether an architecture is proportionate to the requirement rather than simply technically possible.
Exam Logistics, Scoring, and Booking Considerations
Microsoft exam delivery is normally available through an authorised test centre or online proctoring through Pearson VUE, subject to regional availability and current Microsoft policies. Online testing requires a suitable desktop or laptop, webcam, microphone, stable internet connection, and a compliant test environment; candidates should not plan to take the exam from a phone.
The original AZ-305 exam guidance commonly describes a question range of 40 to 70, a passing score of 700 out of 1000, and a duration of around two hours. Microsoft can update exam delivery details, fees, scheduling rules, and retake policies, so candidates should verify the current information on the Microsoft exam registration page before paying or booking. Exam pricing varies by country or region, and retake rules are governed by Microsoft’s active certification exam policies.
During the exam, time management matters because scenario questions take longer than short knowledge checks. Candidates should read requirements carefully, mark uncertain items where the interface allows it, and avoid spending too long trying to prove that every answer is perfect. In many AZ-305 questions, the realistic task is to find the answer that best satisfies the stated requirements while introducing the fewest unacceptable risks.
Should Employers Fund AZ-305 Preparation?
Employer funding can be a reasonable option when the certification supports current or upcoming Azure work, but it should be approached as a business case rather than an assumption. A candidate can explain how the preparation will improve architecture reviews, migration planning, governance design, cost control, and recovery planning for live projects.
A stronger request connects the certification to specific team outcomes. For example, the candidate may offer to produce a revised landing-zone decision record, document a backup and disaster recovery pattern, or review current Azure Policy assignments after completing the study plan. That makes the value clearer than a request based only on exam reimbursement.
AZ-305 FAQ
Is AZ-104 required before taking AZ-305?
No. AZ-104 is not required to sit AZ-305. However, both AZ-104 and AZ-305 are required for Microsoft to award the Azure Solutions Architect Expert certification, so candidates should plan for both exams if the certification is the goal.
Can someone from AWS or Google Cloud prepare for AZ-305?
Yes, but they should expect to learn Azure-specific governance, identity, networking, data, and monitoring patterns. Prior experience with AWS or Google Cloud helps with architecture thinking, while Azure documentation and hands-on labs are needed to learn the Microsoft implementation details.
What is the best way to study for scenario questions?
The strongest approach is to practise with design scenarios rather than isolated service notes. Candidates should identify requirements, write assumptions, compare viable options, note trade-offs, and then choose the option that best satisfies the business and technical constraints.
Does AZ-305 have a fixed exam fee everywhere?
No. Microsoft exam pricing can vary by country or region, and candidates should check the live Microsoft exam registration page before booking. The same applies to delivery options, retake rules, and scheduling availability.
Turning AZ-305 Preparation into Architecture Practice
AZ-305 preparation is most useful when it builds habits that architects use after the exam: reading requirements carefully, documenting assumptions, comparing trade-offs, defending cost and resilience choices, and applying governance without blocking delivery. The certification matters, but the deeper value is learning to make Azure design decisions in a disciplined way.
A practical next step is to download the current Microsoft Learn skills outline, map each objective to a small design scenario, and build a weekly review rhythm around labs and decision records. Candidates who want structured preparation can use Readynez training for guided AZ-305 practice, and those who need help choosing the right route can contact the team to discuss the certification path without treating extra exams as a substitute for relevant architecture skill.
