Azure Event Grid Partner Topic Misconception
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution. After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear on the review screen. You are implementing an application by using Azure Event Grid to push near-real-time information to customers. You have the following requirements: • You must send events to thousands of customers that include hundreds of various event types. • The events must be filtered by event type before processing. • Authentication and authorization must be handled by using Microsoft Entra ID. • The events must be published to a single endpoint. You need to implement Azure Event Grid. Solution: Publish events to a partner topic. Create an event subscription for each customer. Does the solution meet the goal?
Community Insight
The core concept tested is the distinction between system topics/partner topics and custom topics in Event Grid; the trap lies in confusing 'partner' resources with standard publishing endpoints.
This question clarifies the architectural role of Azure Event Grid partner topics, establishing that they are for consuming events from third-party SaaS providers rather than publishing custom application events.
Learners often select 'Yes' because they associate 'Event Grid' with event publishing generally, failing to recognize that a 'partner topic' is specifically an inbound subscription resource, not an outbound publish target.
Community Discussion (1 comments)
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Expert Analysis
Why the Answer Is Correct
The solution does not meet the goal. In Azure Event Grid, a Partner Topic (or more accurately, a subscription to a partner topic) represents a consumer relationship where you receive events from a registered SaaS provider (like GitHub or ServiceNow). You cannot publish your own application's events TO a partner topic; it is an endpoint for ingesting external data, not for publishing internal events. To publish events to thousands of customers via a single endpoint, you should use a Custom Topic (or Domain) and create individual subscriptions for each customer.Why the Other Options Are Wrong
Selecting 'Yes' implies that a partner topic functions as a publisher endpoint. This is incorrect because partner topics are defined by the SaaS provider, not the customer. The customer creates a subscription to receive these events. Since the requirement is to send events FROM your application TO customers, using a partner topic is architecturally backwards.Community Comment Notes
Community consensus correctly identifies this as 'No'. As one commenter noted, "a partner topic is the wrong kind of resource for this scenario" because it is designed for consuming events from third parties, not publishing them. Another user emphasized that "Your application can't publish its own events to a partner topic," reinforcing that custom topics are required for this workflow.Exam Strategy
Always distinguish between Custom Topics (for your own events), System Topics (for Azure resource events), and Partner Topics (for SaaS provider events). When the goal is to publish your app's data, never choose a Partner Topic.
Frequently Asked Questions
What is the difference between a Custom Topic and a Partner Topic?
A Custom Topic allows you to publish your own events. A Partner Topic is pre-configured by Microsoft for specific SaaS providers (like GitHub) so you can subscribe to their events.
Can I use a Domain instead of a Topic?
Yes, Domains allow multiple publishers to write to a single topic namespace, which might be better for multi-tenant scenarios, but Partner Topics remain for inbound SaaS events only.