MQTT.Agent - open protocol for AI agents

Platform Comparison

CloudSignal vs AWS IoT Core
Portable MQTT vs AWS Lock-In

AWS IoT Core is powerful if your stack already lives in AWS, but it bills across five service line items and ties your topics, auth, and tooling to one cloud. CloudSignal is portable MQTT with one predictable bill.

Feature-by-Feature Comparison

An honest side-by-side. We call out where AWS IoT has the stronger story.

Feature
CloudSignal
AWS IoT Core
Protocol
AWS IoT Core implements MQTT but imposes service-specific restrictions
MQTT 3.1.1 and MQTT 5 (open ISO/IEC standard)
MQTT 3.1.1 and MQTT 5 with AWS-specific limits (no retained messages on default topics, reserved $aws/ prefix)
Pricing model
AWS bills five or more line items for one connected device. Cost is hard to predict without a calculator
Flat monthly tiers with all features included
Per-million-messages, per-million-connection-minutes, plus separate line items for rules, shadow, registry, and Device Defender
Free tier
The AWS free tier expires. CloudSignal's does not
Unlimited time, no credit card, 3 MQTT users
12-month free tier with limits per service line item
Vendor lock-in
The deeper you go into AWS IoT primitives, the harder migration becomes
None. MQTT clients run unchanged on any broker
MQTT clients are portable, but AWS-specific topics, Device Shadow, rules engine, and SigV4 auth tie your stack to AWS
Authentication
AWS cert-based auth is powerful but operationally heavy. CloudSignal favors simpler credentials
Username and password, JWT, token, and per-organization API keys
X.509 certificates, Cognito, custom authorizers, and SigV4
Security model
Both enforce at the broker. CloudSignal makes the rule sets editable in the UI
Broker-enforced ACL rule sets with a visual dashboard
IAM policies and IoT policies enforced at the broker, configured in JSON
AI integration
AWS has Bedrock for models, but no MQTT-native AI streaming product
AI Transport for Vercel AI SDK with streaming and offline resume
No first-party AI streaming transport over MQTT
Ecosystem integrations
If you live inside AWS, the native integrations are a real advantage
REST API bridge and webhook delivery
Native integrations with Lambda, Kinesis, DynamoDB, S3, SNS, SQS, IoT Analytics, and more
Device management
AWS has a deep device management story for large fleets
Per-organization MQTT user management
Device registry, Device Shadow, fleet provisioning, jobs, and Device Defender
Region coverage
AWS has broader global region coverage today
EU and US regions
20+ AWS regions worldwide

Why the Differences Matter

AWS IoT has depth. CloudSignal has predictability and portability. The right choice depends on which one your team actually values today.

One Line Item, Not Five

A single connected AWS IoT device can show up on your bill as messages, connection-minutes, registry storage, shadow operations, rules engine actions, and Device Defender. CloudSignal charges a flat monthly tier so your cost is one number, regardless of message rate or reconnect patterns.

No AWS-Specific Lock-In

AWS IoT Core implements MQTT, but the moment you touch Device Shadow, $aws/ topics, the rules engine, or SigV4 authentication, you are writing AWS-specific code. CloudSignal stays inside the MQTT standard, so your clients, topics, and policies port to any broker.

AI Transport Out of the Box

CloudSignal ships AI Transport, a drop-in transport for the Vercel AI SDK that streams tokens over MQTT and resumes after disconnects. With AWS IoT you would assemble streaming and resume logic yourself on top of Lambda or Bedrock.

Operational Simplicity

AWS IoT rewards teams with deep AWS expertise. CloudSignal rewards teams that want to ship a real-time feature this week. Authentication, ACL rule sets, and message logs are all visible in a single dashboard, not spread across IAM, IoT Core, CloudWatch, and CloudTrail.

How to Decide

The right choice depends on how deep your stack is in AWS and how much portability matters to your roadmap.

Choose CloudSignal when…

  • You want one predictable monthly bill instead of five AWS service line items
  • You need MQTT portability without AWS-specific topics or auth
  • You want AI streaming over MQTT with offline resume out of the box
  • You are shipping an application feature, not building an IoT platform
  • You want ACL rule sets you can edit in a dashboard, not JSON policies

Choose AWS IoT Core when…

  • Your stack already lives in AWS and integrations matter more than portability
  • You operate large device fleets and need Device Shadow, jobs, or fleet provisioning
  • You require X.509 certificate-based authentication at scale
  • You need global region coverage beyond EU and US today
  • Your security team requires native integration with IAM, KMS, and CloudTrail
Portable MQTT. One Bill. AI-Native.

Ready to Try CloudSignal?

Standard MQTT clients work without changes. No AWS account required. Try the free tier in minutes.

Questions about migrating from AWS IoT Core?