Quick Answer
The correct answer is Azure Functions and Azure Logic Apps. Azure Functions provides event-driven compute by executing code in response to triggers like HTTP requests, queue messages, or timer events, while Azure Logic Apps offers a fully managed integration platform for orchestrating workflows that respond to events from sources such as Azure services, HTTP requests, or third-party apps using a visual designer and connectors. On the Microsoft Azure Developer Associate AZ-204 exam, this concept tests your understanding of building serverless event-driven architectures, often appearing in scenario-based questions where you must choose between code-first (Functions) and designer-first (Logic Apps) solutions. A common trap is confusing Logic Apps with Azure Automation or selecting only one service, but remember that both are needed for comprehensive event-driven patterns. Memory tip: “Functions fire code, Logic Apps link services” — if you need custom logic, pick Functions; if you need integration and orchestration, pick Logic Apps.
This AZ-204 practice question tests your understanding of connect to and consume azure services and third-party services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO Azure services can be used to implement serverless event-driven architectures?
Azure Batch
Why wrong: Batch is for parallel job scheduling, not event-driven.
Azure Logic Apps
Logic Apps are serverless workflows that integrate with various services.
Azure Functions
Functions are serverless compute that can be triggered by events.
Azure Container Instances
Why wrong: Container Instances are for containerized apps, not inherently event-driven.
Azure Virtual Machines
Why wrong: VMs are IaaS, not serverless.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Logic Apps
Azure Logic Apps is correct because it provides a fully managed integration platform for orchestrating workflows that respond to events from various sources, such as HTTP requests, Azure services, or third-party apps, using a visual designer and connectors. Azure Functions is correct because it offers event-driven compute capabilities where code executes in response to triggers like HTTP requests, queue messages, or timer events, enabling serverless architectures without managing infrastructure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Batch
Why it's wrong here
Batch is for parallel job scheduling, not event-driven.
Azure Logic Apps
Why this is correct
Logic Apps are serverless workflows that integrate with various services.
Related concept
Read the scenario before looking for a memorised answer.
Azure Functions
Why this is correct
Functions are serverless compute that can be triggered by events.
Related concept
Read the scenario before looking for a memorised answer.
Azure Container Instances
Why it's wrong here
Container Instances are for containerized apps, not inherently event-driven.
Azure Virtual Machines
Why it's wrong here
VMs are IaaS, not serverless.
Common exam traps
The trap here is that candidates often confuse Azure Batch or Azure Container Instances as serverless event-driven services because they are 'serverless' in some sense, but they lack the native event-triggering and orchestration capabilities that define serverless event-driven architectures.
Detailed technical explanation
Under the hood, Azure Functions uses a host process that listens to trigger bindings (e.g., Azure Storage queues, Event Grid, or Service Bus) via a gRPC-based worker for languages like C# or Node.js, and scales out based on the number of events using the Scale Controller. Logic Apps uses a managed runtime that evaluates workflow definitions (JSON-based) and executes actions via connectors, with built-in retry policies and state management. A real-world scenario is processing IoT device telemetry: an Event Grid event triggers a Logic App to filter and route data, then an Azure Function enriches the data before storing it in Cosmos DB.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
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FAQ
Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Read the scenario before looking for a memorised answer..
The correct answer is: Azure Logic Apps — Azure Logic Apps is correct because it provides a fully managed integration platform for orchestrating workflows that respond to events from various sources, such as HTTP requests, Azure services, or third-party apps, using a visual designer and connectors. Azure Functions is correct because it offers event-driven compute capabilities where code executes in response to triggers like HTTP requests, queue messages, or timer events, enabling serverless architectures without managing infrastructure.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This AZ-204 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 AZ-204 exam.
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