Azure Web PubSub vs Socket.IO

	Azure Web PubSub	Socket.IO
Time to "hello world" Reviewed by 3+ independent developers Ratings were given based on the average amount of time it takes to sign up to a new account and publish the first message.	3 / 5 5 = <30 min 4 = 30 min - 1 h 3 = 1-2 h 2 = 2-4 h 1 = 4+ h View code example	4 / 5 5 = <30 min 4 = 30 min - 1 h 3 = 1-2 h 2 = 2-4 h 1 = 4+ h View code example
Demos / Tutorials A selection of online demos and tutorials so you can test and see the code in action. Explore Ably's tutorials for our pub/sub messaging platform	Chat app tutorial Whiteboard demo Serverless notification app tutorial	Getting started with Socket.IO Whiteboard demo Build a realtime database with Socket.IO and MongoDB
Documentation Reviewed by 3+ independent developers Explore Ably's documentation for our pub/sub messaging platform	3.50 / 5 Getting started guides / 5 Information architecture and developer journey / 5 API reference documentation / 5 Readability, design and navigation / 5 Quality of code / 5 Breadth and quality of tutorials / 5 “Good quick starts and how-to guides, but the information architecture could be better - sometimes you have to do a bit of digging to find what you need (e.g. how to do pub/sub messaging). The API reference is clear, and the readability and docs design are decent. The quality of sample code provided is not great, and you often have to search for external examples. More tutorials would have been good, and more diverse (most of the existing ones focus on chat).”	4 / 5 Getting started guides / 5 Information architecture and developer journey / 5 API reference documentation / 5 Readability, design and navigation / 5 Quality of code / 5 Breadth and quality of tutorials / 5 "Much like the solution, the documentation is pretty lightweight. You have an excellent getting started guide that requires no prior Socket.IO or Node.js knowledge. There are tens of code snippets throughout the docs, which is fantastic. There are almost no tutorials (not official ones), but you do have a chat and a whiteboard demo that you can grab from GitHub. The quality of writing is good enough. Most of the time, things are clear. Navigating between documentation, demos, and the API reference is quite annoying. They could have done a better job linking these sections and having them displayed in a common ToC. Although lightweight and generally clear, the documentation seems to have some holes in it, based on the number of GitHub and Stack Overflow questions about Socket.IO."
Dashboard or dev console Reviewed by 3+ independent developers Sign up for free and explore Ably's pub/sub messaging platform	4 / 5 Ease of use / 5 Stats and reports / 5 Functionality / 5 “Azure Portal allows you to configure and manage your Web PubSub deployment, e.g. creating a service instance, setting up endpoints and connections to the service, scaling connections, etc. All is pretty well explained, with plenty of tooltips and instructions in the UI. You can also monitor various stats such as the number of concurrent connections and how it evolves over time. There’s a live trace tool that makes it easy to capture and troubleshoot issues in realtime.”	1 / 5 Ease of use / 5 Stats and reports / 5 Functionality / 5 "Socket.IO does not provide a developer console or dashboard."
SDKs Note: Only official SDKs were taken into account. Explore Ably's 25+ SDKs for our pub/sub messaging platform	4 server SDKs Including: C# / .NET Java JavaScript You can build/use standard WebSocket clients in different programming languages and connect them to Azure Web PubSub.	1 official Socket.IO server implementation (Node.js), and 4 official client implementations (JavaScript, Java, C++, Swift) Note that there are also several community-made server and client implementations in other languages, such as Python, .NET, and Golang.
API structure Reviewed by 3+ independent developers	3.75 / 5 API consistency across SDKs / 5 Well structured / 5 Intuitive / 5 Simple / 5 “The API seems to be consistent across all the server SDKs, with few differences between languages. Parameters, methods, etc are pretty intuitively named. It’s not necessarily the most straightforward API to use, as it has many interfaces; plus, you will often find you need to do some data massaging.”	5 / 5 API consistency across SDKs / 5 Well structured / 5 Intuitive / 5 Simple / 5 "Socket.IO has a simple JavaScript-based API interface that has intuitive naming conventions. The API reference documentation is very detailed, with each resource described in detail, and with numerous code examples throughout. It’s easy to get started with both the Server and the Client APIs."

Azure Web PubSub

Socket.IO

Getting started and developer experience

Time to "hello world"

Reviewed by 3+ independent developers

Ratings were given based on the average amount of time it takes to sign up to a new account and publish the first message.

3 / 5

5 = <30 min
4 = 30 min - 1 h
3 = 1-2 h
2 = 2-4 h
1 = 4+ h

View code example

4 / 5

5 = <30 min
4 = 30 min - 1 h
3 = 1-2 h
2 = 2-4 h
1 = 4+ h

View code example

Demos / Tutorials

A selection of online demos and tutorials so you can test and see the code in action.

Explore Ably's tutorials for our pub/sub messaging platform

Documentation

Reviewed by 3+ independent developers

Explore Ably's documentation for our pub/sub messaging platform

3.50 / 5

Getting started guides / 5

Information architecture and developer journey / 5

API reference documentation / 5

Readability, design and navigation / 5

Quality of code / 5

Breadth and quality of tutorials / 5

“Good quick starts and how-to guides, but the information architecture could be better - sometimes you have to do a bit of digging to find what you need (e.g. how to do pub/sub messaging). The API reference is clear, and the readability and docs design are decent. The quality of sample code provided is not great, and you often have to search for external examples. More tutorials would have been good, and more diverse (most of the existing ones focus on chat).”

4 / 5

Getting started guides / 5

Information architecture and developer journey / 5

API reference documentation / 5

Readability, design and navigation / 5

Quality of code / 5

Breadth and quality of tutorials / 5

"Much like the solution, the documentation is pretty lightweight. You have an excellent getting started guide that requires no prior Socket.IO or Node.js knowledge. There are tens of code snippets throughout the docs, which is fantastic. There are almost no tutorials (not official ones), but you do have a chat and a whiteboard demo that you can grab from GitHub. The quality of writing is good enough. Most of the time, things are clear. Navigating between documentation, demos, and the API reference is quite annoying. They could have done a better job linking these sections and having them displayed in a common ToC. Although lightweight and generally clear, the documentation seems to have some holes in it, based on the number of GitHub and Stack Overflow questions about Socket.IO."

Dashboard or dev console

Reviewed by 3+ independent developers

4 / 5

Ease of use / 5

Stats and reports / 5

Functionality / 5

“Azure Portal allows you to configure and manage your Web PubSub deployment, e.g. creating a service instance, setting up endpoints and connections to the service, scaling connections, etc. All is pretty well explained, with plenty of tooltips and instructions in the UI. You can also monitor various stats such as the number of concurrent connections and how it evolves over time. There’s a live trace tool that makes it easy to capture and troubleshoot issues in realtime.”

1 / 5

Ease of use / 5

Stats and reports / 5

Functionality / 5

"Socket.IO does not provide a developer console or dashboard."

SDKs

Note: Only official SDKs were taken into account.

Explore Ably's 25+ SDKs for our pub/sub messaging platform

4 server SDKs

Including:

C# / .NET
Java
JavaScript

You can build/use standard WebSocket clients in different programming languages and connect them to Azure Web PubSub.

1 official Socket.IO server implementation (Node.js), and 4 official client implementations (JavaScript, Java, C++, Swift)

Note that there are also several community-made server and client implementations in other languages, such as Python, .NET, and Golang.

API structure

Reviewed by 3+ independent developers

3.75 / 5

API consistency across SDKs / 5

Well structured / 5

Intuitive / 5

Simple / 5

“The API seems to be consistent across all the server SDKs, with few differences between languages. Parameters, methods, etc are pretty intuitively named. It’s not necessarily the most straightforward API to use, as it has many interfaces; plus, you will often find you need to do some data massaging.”

5 / 5

API consistency across SDKs / 5

Well structured / 5

Intuitive / 5

Simple / 5

"Socket.IO has a simple JavaScript-based API interface that has intuitive naming conventions. The API reference documentation is very detailed, with each resource described in detail, and with numerous code examples throughout. It’s easy to get started with both the Server and the Client APIs."

Azure Web PubSub	Socket.IO
// set up the subscriber const WebSocket = require('ws'); const { WebPubSubServiceClient } = require('@azure/web-pubsub'); async function main() { const hub = "pubsub"; let service = new WebPubSubServiceClient(process.env.WebPubSubConnectionString, hub); let token = await service.getClientAccessToken(); let ws = new WebSocket(token.url); ws.on('open', () => console.log('connected')); ws.on('message', data => console.log('Message received: %s', data)); } main(); // publish a message to the service const { WebPubSubServiceClient } = require('@azure/web-pubsub'); const hub = "pubsub"; let service = new WebPubSubServiceClient(process.env.WebPubSubConnectionString, hub); // by default it uses `application/json`, specify contentType as `text/plain` if you want plain-text service.sendToAll(process.argv[2], { contentType: "text/plain" });	var app = require('express')(); var http = require('http').Server(app); var io = require('socket.io')(http); app.get('/', function(req, res) { res.sendfile('index.html'); }); //Broadcasting events var clients = 0; io.on('connection', function(socket) { clients++; io.sockets.emit('broadcast',{ description: clients + ' clients connected!'}); socket.on('disconnect', function () { clients--; io.sockets.emit('broadcast',{ description: clients + ' clients connected!'}); }); }); http.listen(3000, function() { console.log('listening on localhost:3000'); }); //Handling broadcast events on the client side <!DOCTYPE html> <html> <head> <title>Hello world</title> </head> <script src = "/socket.io/socket.io.js"></script> <script> var socket = io(); socket.on('broadcast',function(data) { document.body.innerHTML = ''; document.write(data.description); }); </script> <body>Hello world</body> </html>

Azure Web PubSub

Socket.IO

"Hello world" code example

// set up the subscriber
const WebSocket = require('ws');
const { WebPubSubServiceClient } = require('@azure/web-pubsub');

async function main() {
  const hub = "pubsub";
  let service = new WebPubSubServiceClient(process.env.WebPubSubConnectionString, hub);
  let token = await service.getClientAccessToken();
  let ws = new WebSocket(token.url);
  ws.on('open', () => console.log('connected'));
  ws.on('message', data => console.log('Message received: %s', data));
}

main();

// publish a message to the service
const { WebPubSubServiceClient } = require('@azure/web-pubsub');

const hub = "pubsub";
let service = new WebPubSubServiceClient(process.env.WebPubSubConnectionString, hub);

// by default it uses `application/json`, specify contentType as `text/plain` if you want plain-text
service.sendToAll(process.argv[2], { contentType: "text/plain" });

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

app.get('/', function(req, res) {
   res.sendfile('index.html');
});

//Broadcasting events
var clients = 0;
io.on('connection', function(socket) {
   clients++;
   io.sockets.emit('broadcast',{ description: clients + ' clients connected!'});
   socket.on('disconnect', function () {
      clients--;
      io.sockets.emit('broadcast',{ description: clients + ' clients connected!'});
   });
});

http.listen(3000, function() {
   console.log('listening on localhost:3000');
});

//Handling broadcast events on the client side
<!DOCTYPE html>
<html>
   <head>
      <title>Hello world</title>
   </head>
   <script src = "/socket.io/socket.io.js"></script>
   <script>
      var socket = io();
      socket.on('broadcast',function(data) {
         document.body.innerHTML = '';
         document.write(data.description);
      });
   </script>
   <body>Hello world</body>
</html>

	Azure Web PubSub	Socket.IO
Pub/Sub messaging Pub/Sub is a design pattern that lets any number of publishers (producers) push messages to channels (also known as topics). Multiple subscribers (consumers) can subscribe to a channel to consume published messages. Explore Ably's pub/sub messaging implementation		Limited You can use the rooms feature to broadcast events to a subset of clients, but this applies exclusively to the server-side (i.e. clients don’t have access to the list of rooms it has joined). You can also use a Redis adapter to broadcast events to clients through the Redis pub/sub mechanism.
Message queues A message queue is a form of asynchronous service-to-service communication. Messages are stored on a queue until they are processed. Note that each message is only consumed by one subscriber (consumer). Explore Ably's message queues implementation
Presence Presence enables you to track the online and offline status of devices and end-users in real time and to store their state. Essential for chat apps and multiplayer games. Explore Ably's presence implementation
Message history Message history provides a means to retrieve previously published messages. For this to be possible, message data must be stored (persisted) somewhere. Explore Ably's message history implementation
Connection state recovery (stream resume) In the case of unreliable network conditions, clients may suddenly disconnect.Connection state recovery ensures that when they reconnect, the data stream resumes exactly where it left off. Explore Ably' s connection state recovery implementation	Limited Connection recovery with continuity is possible only when reliable JSON WebSocket or Reliable Protobuf WebSocket subprotocols are used. Note that these reliable subprotocols are currently in preview, and some changes are expected in the future.
Guaranteed message ordering Ordering ensures that messages are delivered to consumers in the same order that producers publish them. Explore Ably' s guaranteed message ordering implementation	Limited Message ordering is possible only when reliable JSON WebSocket or Reliable Protobuf WebSocket subprotocols are used. Note that these reliable subprotocols are currently in preview, and some changes are expected in the future.
Exactly-once semantics Exactly-once is a system-wide data integrity guarantee that ensures each message is delivered to consumers exactly-once. Explore Ably' s idempotent publishing implementation	Limited Exactly-once delivery is possible only when reliable JSON WebSocket or Reliable Protobuf WebSocket subprotocols are used. Note that these reliable subprotocols are currently in preview, and some changes are expected in the future.
Message delta compression Message delta compression enables you to only send the changes from the previous message to subscribers each time there’s an update, instead of the entire message. Useful for use cases where there is a significant degree of similarity between successive messages. Explore Ably' s message delta compression implementation
Native push notifications Native push notifications can be used to deliver messages even when clients are offline. Useful for geolocation updates or news alerts. Explore Ably's push notifications implementation
Webhooks Webhooks provide a mechanism to get messages and other types of events (such as clients entering or leaving channels) pushed to your servers over HTTP. Explore Ably's webhooks implementation
Serverless functions A serverless function is essentially an isolated, single-purpose piece of code that is only executed when it’ triggered by an event. For example, you can use serverless functions to send a welcome message to clients when they become present on chat channels. Note that serverless functions are usually fully managed by cloud vendors. Explore Ably's serverless functions implementation	Limited Only integrates with Azure Functions. Azure Web PubSub doesn’t have in-built support for other serverless platforms, such as AWS Lambda or Google Cloud Functions.
Built-in integrations Which popular services & systems are Azure Web PubSub and Socket.IO integrated with? Explore Ably's library of integrations	Webhooks Custom IFTTT Zapier Serverless functions AWS Lambda Cloudflare Workers Google Cloud Functions Microsoft Azure Functions Streaming Apache Kafka Apache Pulsar Amazon Kinesis Amazon SQS RabbitMQ AMQP	Webhooks Custom IFTTT Zapier Serverless functions AWS Lambda Cloudflare Workers Google Cloud Functions Microsoft Azure Functions Streaming Apache Kafka Apache Pulsar Amazon Kinesis Amazon SQS RabbitMQ AMQP
Known limits and constraints Find out practical limits, such as the maximum message size, or the maximum number of concurrent connections. Explore the practical limits of the Ably pub/sub messaging platform	Publisher throughput: Outbound bandwidth per unit: maximum 8 MBps Maximum message size: 1 MB Maximum number of units: 100 Maximum number of concurrent connections: 1000 / unit (applies to the Standard tier)	Throughput Unknown Maximum message size Unknown, but the default is 1 MB Maximum number of topics N/A Maximum number of concurrent connections Unknown

Azure Web PubSub

Socket.IO

Realtime features

Pub/Sub messaging

Pub/Sub is a design pattern that lets any number of publishers (producers) push messages to channels (also known as topics). Multiple subscribers (consumers) can subscribe to a channel to consume published messages.

Explore Ably's pub/sub messaging implementation

Limited

You can use the rooms feature to broadcast events to a subset of clients, but this applies exclusively to the server-side (i.e. clients don’t have access to the list of rooms it has joined).

You can also use a Redis adapter to broadcast events to clients through the Redis pub/sub mechanism.

Message queues

A message queue is a form of asynchronous service-to-service communication. Messages are stored on a queue until they are processed. Note that each message is only consumed by one subscriber (consumer).

Explore Ably's message queues implementation

Presence

Presence enables you to track the online and offline status of devices and end-users in real time and to store their state. Essential for chat apps and multiplayer games.

Explore Ably's presence implementation

Message history

Message history provides a means to retrieve previously published messages. For this to be possible, message data must be stored (persisted) somewhere.

Explore Ably's message history implementation

Connection state recovery (stream resume)

In the case of unreliable network conditions, clients may suddenly disconnect.Connection state recovery ensures that when they reconnect, the data stream resumes exactly where it left off.

Explore Ably' s connection state recovery implementation

Limited

Connection recovery with continuity is possible only when reliable JSON WebSocket or Reliable Protobuf WebSocket subprotocols are used. Note that these reliable subprotocols are currently in preview, and some changes are expected in the future.

Guaranteed message ordering

Ordering ensures that messages are delivered to consumers in the same order that producers publish them.

Explore Ably' s guaranteed message ordering implementation

Limited

Message ordering is possible only when reliable JSON WebSocket or Reliable Protobuf WebSocket subprotocols are used. Note that these reliable subprotocols are currently in preview, and some changes are expected in the future.

Exactly-once semantics

Exactly-once is a system-wide data integrity guarantee that ensures each message is delivered to consumers exactly-once.

Explore Ably' s idempotent publishing implementation

Limited

Exactly-once delivery is possible only when reliable JSON WebSocket or Reliable Protobuf WebSocket subprotocols are used. Note that these reliable subprotocols are currently in preview, and some changes are expected in the future.

Message delta compression

Message delta compression enables you to only send the changes from the previous message to subscribers each time there’s an update, instead of the entire message. Useful for use cases where there is a significant degree of similarity between successive messages.

Explore Ably' s message delta compression implementation

Native push notifications

Native push notifications can be used to deliver messages even when clients are offline. Useful for geolocation updates or news alerts.

Explore Ably's push notifications implementation

Webhooks

Webhooks provide a mechanism to get messages and other types of events (such as clients entering or leaving channels) pushed to your servers over HTTP.

Explore Ably's webhooks implementation

Serverless functions

A serverless function is essentially an isolated, single-purpose piece of code that is only executed when it’ triggered by an event. For example, you can use serverless functions to send a welcome message to clients when they become present on chat channels.

Note that serverless functions are usually fully managed by cloud vendors.

Explore Ably's serverless functions implementation

Limited

Only integrates with Azure Functions. Azure Web PubSub doesn’t have in-built support for other serverless platforms, such as AWS Lambda or Google Cloud Functions.

Built-in integrations

Which popular services & systems are Azure Web PubSub and Socket.IO integrated with?

Explore Ably's library of integrations

Webhooks

Custom
IFTTT
Zapier

Serverless functions

AWS Lambda
Cloudflare Workers
Google Cloud Functions
Microsoft Azure Functions

Streaming

Apache Kafka
Apache Pulsar
Amazon Kinesis
Amazon SQS
RabbitMQ
AMQP

Webhooks

Custom
IFTTT
Zapier

Serverless functions

AWS Lambda
Cloudflare Workers
Google Cloud Functions
Microsoft Azure Functions

Streaming

Apache Kafka
Apache Pulsar
Amazon Kinesis
Amazon SQS
RabbitMQ
AMQP

Known limits and constraints

Find out practical limits, such as the maximum message size, or the maximum number of concurrent connections.

Explore the practical limits of the Ably pub/sub messaging platform

Publisher throughput:

Outbound bandwidth per unit: maximum 8 MBps

Maximum message size:

1 MB

Maximum number of units:

100

Maximum number of concurrent connections:

1000 / unit (applies to the Standard tier)

Throughput

Unknown

Maximum message size

Unknown, but the default is 1 MB

Maximum number of topics

N/A

Maximum number of concurrent connections

Unknown

Supported development platforms, languages, open protocols and cloud models
Development platforms & operating systems Which popular development platforms and operating systems do Azure Web PubSub and Socket.IO support via official SDKs? Explore the development platforms supported by Ably	Android Java / JVM iOS macOS iPadOS tvOS watchOS Mono .NET	Android Java / JVM iOS macOS iPadOS tvOS watchOS Mono .NET
Languages Which popular programming languages do Azure Web PubSub and Socket.IO support via offical SDKs? Explore the programming languages supported by Ably	JavaScript Node.js TypeScript Java Objective-C Swift Go PHP Python Ruby Flutter Clojure Scala	JavaScript Node.js TypeScript Java Objective-C Swift Go PHP Python Ruby Flutter Clojure Scala
Open protocols Which popular open protocols do Azure Web PubSub and Socket.IO support? Explore the open protocols supported by Ably	WebSocket HTTP AMQP MQTT STOMP SSE Webhooks	WebSocket HTTP AMQP MQTT STOMP SSE Webhooks
Cloud models Which popular cloud models do Azure Web PubSub and Socket.IO support?	Self-hosted Cloud-managed Serverless Globally-distributed	Self-hosted Cloud-managed Serverless Globally-distributed

Global and reliable edge service
Edge messaging network with latency-based routing Latency-based routing ensures that clients are always routed to the nearest datacenter and point of presence. Explore Ably's routing mechanism that mitigates network and DNS issues		N/A
Multi-region data replication (message durability) Multi-region data replication (storage) protects against single points of failure and ensures message data durability. Learn how Ably ensures message durability		N/A
Uptime SLAs Here’s what the most common SLAs amount to in terms of downtime over a calendar year: 99.999% SLA = 5m 15s downtime per year 99.99% SLA = 52m 35s downtime per year 99.95% SLA = 4h 22m 58s downtime per year 99.9% SLA = 8h 45m 56s downtime per year 99% SLA = 3d 15h 39m 29s downtime per year Source: https://uptime.is/	99.9%	N/A
Quality of Service What QoS guarantees do Azure Web PubSub and Socket.IO provide natively? Explore Ably's availability and uptime guarantees for our pub/sub messaging platform	Multi-region data replication (storage) Exactly-once semantics Guaranteed message ordering Connection state recovery (stream resume)	Multi-region data replication (storage) Exactly-once semantics Guaranteed message ordering Connection state recovery (stream resume)

Security
API key authentication The simplest way to authenticate. Involves using private API keys that you can usually create and edit via a dashboard. Recommended to be used server-side, as private API keys shouldn’t be shared with untrusted parties. Explore Ably's implementation of API key authentication		N/A
Token-based authentication Which popular token-based authentication mechanisms do Azure Web PubSub and Socket.IO support? Note that token-based authentication is usually the recommended strategy on the client-side as it provides more fine-grained access control and limits the risk of credentials being compromised. Explore Ably's implementation of token-based authentication	Ephemeral tokens JWTs	Ephemeral tokens JWTs
Configurable rules and permissions Which types of configurable rules and permissions do Azure Web PubSub and Socket.IO support? Explore Ably's configurable rules and permissions	API keys rules and permissions Operation rules and permissions Admin rights	API keys rules and permissions Operation rules and permissions Admin rights
Message encryption Which types of message encryption do Azure Web PubSub and Socket.IO support? Explore Ably's message encryption mechanisms	Encrypted at rest Encrypted in transit Message payload encryption	Encrypted at rest Encrypted in transit Message payload encryption
Formal certifications Which formal certifications are Azure Web PubSub and Socket.IO compliant with? Explore Ably's security and compliance for our pub/sub messaging platform	SOC 2 TYPE I SOC 2 Type II HIPAA EU GDPR	SOC 2 TYPE I SOC 2 Type II HIPAA EU GDPR

Pricing & Support
Free package What do the free packages offered by Azure Web PubSub and Socket.IO consist of? Explore Ably's free package for our pub/sub messaging platform	You can only use one unit, with a maximum of 20 concurrent connections. You have a max quota of 20.000 messages per day.	Socket.IO is a free & open-source solution.
Pricing model How are the Azure Web PubSub and Socket.IO pricing models calculated? Explore Ably's pricing model for our pub/sub messaging platform	In addition to the free tier, Azure Web PubSub provides a standard tier, which gives you 1 million messages for free; additional messages cost $1 per million. You can use a maximum of 100 units, with the price being $1.61 per unit per day.	N/A
Enterprise package What benefits do the Azure Web PubSub and Socket.IO enterprise packages offer? Explore Ably's enterprise package for our pub/sub messaging platform	There is no enterprise package with additional benefits / features for Azure Web PubSub - only the free and standard tiers mentioned above.	N/A
Community Reviewed by 3+ independent developers Explore Ably's community support channel for our pub/sub messaging platform	1 / 5 Presence on multiple channels / 5 Size and activity / 5 “Azure Web PubSub is a new service, and its community is basically non-existent. You can barely find any blog posts or demos built by the community.”	5 / 5 Presence on multiple channels / 5 Size and activity / 5 "Socket.IO is the most popular open-source WebSocket solution. It has a large and very active community. Client SDKs in several different languages? All of them community-made. Troubleshooting and support questions? The community will sort you out, almost always. As you’d expect, Stack Overflow and GitHub are very busy, with tens of thousands of questions, views, and responses about all things Socket.IO."
Support What types of support options and response times do Azure Web PubSub and Socket.IO offer? Explore Ably's support options for our pub/sub messaging platform	General support options: Email, support ticket, phone, technical documentation, community support (e.g. forums or StackOverflow). Enterprise support: The Professional Direct (ProDirect) plan includes 24/7 support, a Support API (to create & manage support tickets programmatically), and operational & architectural guidance from delivery managers. Response time: Within 8 business hours for Developer customers Between 1 and 8 hours initial response time (depending on severity) for Standard and ProDirect customers.	General support options Technical documentation, Slack, Stack Overflow, GitHub. Enterprise support N/A Response time N/A

Pricing & Support

Free package

What do the free packages offered by Azure Web PubSub and Socket.IO consist of?

Explore Ably's free package for our pub/sub messaging platform

You can only use one unit, with a maximum of 20 concurrent connections. You have a max quota of 20.000 messages per day.

Socket.IO is a free & open-source solution.

Pricing model

How are the Azure Web PubSub and Socket.IO pricing models calculated?

Explore Ably's pricing model for our pub/sub messaging platform

In addition to the free tier, Azure Web PubSub provides a standard tier, which gives you 1 million messages for free; additional messages cost $1 per million.

You can use a maximum of 100 units, with the price being $1.61 per unit per day.

N/A

Enterprise package

What benefits do the Azure Web PubSub and Socket.IO enterprise packages offer?

Explore Ably's enterprise package for our pub/sub messaging platform

There is no enterprise package with additional benefits / features for Azure Web PubSub - only the free and standard tiers mentioned above.

N/A

Community

Reviewed by 3+ independent developers

Explore Ably's community support channel for our pub/sub messaging platform

1 / 5

Presence on multiple channels / 5

Size and activity / 5

“Azure Web PubSub is a new service, and its community is basically non-existent. You can barely find any blog posts or demos built by the community.”

5 / 5

Presence on multiple channels / 5

Size and activity / 5

"Socket.IO is the most popular open-source WebSocket solution. It has a large and very active community. Client SDKs in several different languages? All of them community-made. Troubleshooting and support questions? The community will sort you out, almost always. As you’d expect, Stack Overflow and GitHub are very busy, with tens of thousands of questions, views, and responses about all things Socket.IO."

Support

What types of support options and response times do Azure Web PubSub and Socket.IO offer?

Explore Ably's support options for our pub/sub messaging platform

General support options:

Email, support ticket, phone, technical documentation, community support (e.g. forums or StackOverflow).

Enterprise support:

The Professional Direct (ProDirect) plan includes 24/7 support, a Support API (to create & manage support tickets programmatically), and operational & architectural guidance from delivery managers.

Response time:

Within 8 business hours for Developer customers

Between 1 and 8 hours initial response time (depending on severity) for Standard and ProDirect customers.

General support options

Technical documentation, Slack, Stack Overflow, GitHub.

Enterprise support

N/A

Response time

N/A

Disclaimer: The information presented for Azure Web PubSub was last updated on 25 August 2022 and on 7 June 2024 for Socket.IO. It is possible that some details may now be out of date. If you think that’s the case, please let us know so we can update them. In any case, you should not rely solely on the information presented here and must check with each provider before deciding to integrate or buy any of these two solutions.

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