Google Cloud Pub/Sub is a managed messaging service for moving events between independent applications and services. It helps teams decouple publishers from subscribers so they can build asynchronous workflows and process events independently.

What company sizes and industries is Google Cloud Pub/Sub the best fit for?

Google Cloud Pub/Sub is used across small businesses, mid-market organizations, and enterprises, with small-business and enterprise users especially visible. Common uses include connecting services, building event-driven applications, and moving data through pipelines.

Small businesses: Use it for lightweight messaging, event triggers, and connecting applications.
Mid-market organizations: Use it to link services and support data pipelines as workloads grow.
Enterprises: Use it for messaging across microservices, streaming data, and large-scale event-driven systems.

What customer support options does Google Cloud Pub/Sub provide, and how do users find the overall support experience?

The support experience comes across as adequate but not consistently a standout; evaluations lean toward the middle, with some stronger and weaker experiences. The emphasis in practical use is more on Pub/Sub’s managed messaging and reliability than on support as a clear differentiator.

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Claude I.

Cloud Consultant | GCP

Small-Business (50 or fewer emp.)

3/25/2026

"Fully Managed Pub/Sub with Reliable, Low-Latency Global Scalability"

4.5/5

What do you like best about Google Cloud Pub/Sub?

Google Cloud Pub/Sub is fully managed and has global scalability with exactly once delivery. Pub/Sub can be used to build event driven systems without the need to manage infrastructure. All you do is create a topic, set subscriptions and trust messages will be delivered reliably with low latency. Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

Pub/Sub has no multi-level dead letter queues, after configuring a dead letter topic, there's no automatic retry ffrom that dead letter queue. This means that once messages land there, you have to manually republish them. Pub/Sub also has ordering limitations, message ordering is only supported within a single region and requires partioning that is key-based. Pub/Sub has complex IAM and has no built in schema evolution tools. Review collected by and hosted on G2.com.

Verified User in Retail

Enterprise (> 1000 emp.)

3/28/2026

"A dependable way to connect services across GCP"

4.5/5

What do you like best about Google Cloud Pub/Sub?

What I like most is how flexible it is for event-driven workflows. We use Pub/Sub in a few different ways across our stack; for example, streaming error logs into a topic that triggers a Cloud Function to send Slack alerts, and also passing event data from Appsflyer to trigger Cloud Run services. It’s been very reliable and scales well without us having to think about infrastructure. Once topics and subscriptions are set up, it just works in the background. Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

One downside is that it can be a bit hard to debug when something breaks in the pipeline. Since everything is asynchronous, you sometimes have to trace messages across multiple services (Pub/Sub, Cloud Functions, Cloud Run) to find the issue. Also, the UI isn’t the most intuitive when managing multiple topics and subscriptions. Review collected by and hosted on G2.com.

What problems is Google Cloud Pub/Sub solving and how is that benefiting you?

It’s helping us decouple different parts of our system and build event-driven workflows. For example, instead of tightly linking services, we can publish events (like logs, file changes, or external data such as AppsFlyer streams) and trigger downstream processing independently. This has made our system more scalable and resilient, and it allows us to react to events in real time; whether that’s sending alerts to Slack or triggering data processing jobs. Review collected by and hosted on G2.com.

Rajesh K.

System Engineer

Enterprise (> 1000 emp.)

9/12/2025

Business partner of the seller or seller's competitor, not included in G2 scores.

"Google Pub/Sub very reliable partner for event-driven systems"

5/5

What do you like best about Google Cloud Pub/Sub?

I like the scaling of GCP Pub/Sub irrespective of load or number of subscriptions. This helps building Fan-In Fan-Out, exactly-once delivery systems. Another unique selling point is configuration flexibility such as integrating with Google Cloud Storage, Eventarc triggers, schedulers, Cloud Run functions, etc. this solves the wiring bottlenecks between micro services. It guarantees ease of configurability and usability by exposing SDK, CLI commands and APIs, The GCP documentation of implementing the client code is excellent. I use the Pub/Sub everyday at my work. GCP's support for Pub/Sub is top tier because this is one of their highlighted products and it is worth the hype. Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

Pub/Sub is more focused on Cloud native functionalities. If we think outside of GCP, there is no point in discussing the implementation. Review collected by and hosted on G2.com.

What problems is Google Cloud Pub/Sub solving and how is that benefiting you?

I am able to publish the message as an event to my services instead of manually making network bounded call. This avoids manual wiring and takes the responsibility of availability and parallelism. On error we do not need to track the error requests and retrying manually, until we acknowledge the message after successful execution Pub/Sub keeps retrying every 10 minutes (default) and after certain retries it removes the specific message from the queue. Review collected by and hosted on G2.com.

Workhub R.

Community Health Worker

Small-Business (50 or fewer emp.)

12/12/2025

""Solid Choice for Event-Driven Systems""

5/5

What do you like best about Google Cloud Pub/Sub?

The service is entirely managed by Google, eliminating the need for users to provision, manage, or scale infrastructure or clusters. Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

Pub/Sub gives at-least-once delivery. So messages can come twice, and you must write code to de-duplicate. Review collected by and hosted on G2.com.

Kristel A.

Lead Customer Success Manager

Small-Business (50 or fewer emp.)

4/28/2025

"Great for people beginning the cloud journey"

4/5

What do you like best about Google Cloud Pub/Sub?

Taking my first steps on the cloud was smooth as the interface is intuitive, the documentation is up to date and the tutorials are comprehensive. The cherry on the on top was being able to make mistakes and learn without having to pay as they provided some credits for new members Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

I did not find easily an image of an apple virtual machine, but this is a bit too specific Review collected by and hosted on G2.com.

Sanyam G.

Software Engineer

Mid-Market (51-1000 emp.)

2/5/2025

"Google Cloud Pub-Sub - Best Messaging Queue Service"

5/5

What do you like best about Google Cloud Pub/Sub?

The best thing I like about Cloud Pub-Sub is that it is a fully managed service and eliminates the need for us to manage its infrastructure. It is also self-scalable as per throughput being received. It ensures at least once delivery and is really easy to integrate both from producer and consumer perspectives. Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

It is slightly more expensive than other message queues such as Apache Kafka. It is not efficient in processing message sizes of more than 10 MB. Review collected by and hosted on G2.com.

Anirban D.

Technical Lead

Enterprise (> 1000 emp.)

3/12/2024

"An all in one messaging service solution for your microservice provided by google cloud"

4/5

What do you like best about Google Cloud Pub/Sub?

I like the slick user interface and how easily we can setup, also support for both push and pull feature was great, mostly the push feature where it can just use a rest api we don't need to do any extra code changes in our existing subscriber api Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

Mostly the dead lettering part need to improve, and also in high load it can send two different message with same message id, which google need to improve Review collected by and hosted on G2.com.

What problems is Google Cloud Pub/Sub solving and how is that benefiting you?

We are building a microservice architecture based software which also support a choreography based microservice model, so we needed a messaging service which can manage asynchronous request so that each service can work independently, the topic and subscriber based architecture of pubsub solved this issue now our 18 individual service is working smoothly and we can manage the user request efficiently Review collected by and hosted on G2.com.

Shaurya V.

Analytics Specialist

Mid-Market (51-1000 emp.)

7/5/2024

"The Friendly Neighborhood Pub-Sub!"

4.5/5

What do you like best about Google Cloud Pub/Sub?

it can easily receive data from Azure bus service or python or other cloud products Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

it doesnt load all of the heavy messages, you have to refresh multiple times and it's a probability that you will find the message you are looking for Review collected by and hosted on G2.com.

joseph k.

Enterprise (> 1000 emp.)

8/30/2023

"A simple to use and manage message broker"

4/5

What do you like best about Google Cloud Pub/Sub?

I like how easy pub/sub is to use out of the box, and how well the various google cloud products integrate with both consuming and producing data for Pub/Sub. Review collected by and hosted on G2.com.

What do you dislike about Google Cloud Pub/Sub?

It would be nice to be able to have namespaces within a project for topics. currently the namespaces appear to be global which is less ideal for when you have many applications that live in a project Review collected by and hosted on G2.com.

What problems is Google Cloud Pub/Sub solving and how is that benefiting you?

Pub/Sub is solving the problem of fast easy to use message queueing. Ive used Azure Service Bus and Rabbit MQ which have a higher level of complexity both in setup and administration. Additionally the observability of the state of the queues is top tier. Lastly being able to scale without worrying about the disk space being over utilized make a huge difference in usability and manageability. Review collected by and hosted on G2.com.