AWS IoT Core vs EMQX

AIAWS IoT Core9.4Visit EMQX8.9Visit

Higher score AI AWS IoT Core #1 in MQTT Broker Software 9.4/10 Paid ✓ 1 of 2 features Visit AWS IoT Core

vs

EMQX #5 in MQTT Broker Software 8.9/10 Free plan · 14-day trial Free planFree trial✓ 0 of 2 features Visit EMQX

• AWS IoT Core fits best

  AWS-centric managed IoT deployments

• EMQX fits best

  Teams needing MQTT with broad protocol connectivity

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Side by side

Feature	AIAWS IoT Core 9.4/10 Visit ↗	EMQX 8.9/10 Visit ↗
At a glance
Editor score	9.4	8.9
Ranking	#1 in MQTT Broker Software	#5 in MQTT Broker Software
Best for	AWS-centric managed IoT deployments	Teams needing MQTT with broad protocol connectivity
Pricing model	Paid	Free plan + paid
Starting price	Not checked yet	$234/mo
Free plan	—	✓ (best)
Free trial	—	14 days
Deployment	Cloud	Cloud, Self-hosted
Platforms	Web	Web
Integrations	5 integrations	50+ integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features AWS IoT Core 1/2 · EMQX 0/2
Retained messages	✓ (best)	Not checked yet
Clustering	Not checked yet	Not checked yet
Specs
Deployment model	Managed	Not checked yet
MQTT versions	3.1.1, 5.0	Not checked yet
Connection limit	Not checked yet	Not checked yet
Authentication methods	X.509 client certificates, AWS Signature Version 4, custom authorizers	Not checked yet
Our review
Pros	Supports MQTT 3.1.1 and MQTT 5, including retained messages and persistent sessions Routes filtered or transformed IoT messages to AWS services Offers X.509, SigV4, and custom-authorizer authentication	Connects MQTT with protocols including CoAP, STOMP, and NATS Routes and transforms data with SQL rules and a visual flow designer Offers TLS/mTLS, authentication controls, ACL/RBAC, and audit logs
Cons	Usage-based pricing varies by component and region Designed for managed cloud deployment rather than self-hosting Integrations center on AWS services	Dedicated Flex starts at $234/month Serverless charges for usage beyond its free monthly quota Plan, capacity, cloud provider, and region affect pricing
Our verdict	AWS IoT Core is a managed cloud service for connecting internet-connected devices to AWS and supporting device-to-cloud and cloud-to-device communication. It suits teams building connected-device fleets across industrial, consumer, and… Read the review →	EMQX provides MQTT publish/subscribe messaging for IoT, AI, and connected-device workloads. Its mix of managed cloud, bring-your-own-cloud, and self-hosted Enterprise options suits teams that need to connect device fleets or real-time data… Read the review →

Strengths and trade-offs

• AWS IoT Core — where it wins

  • Supports MQTT 3.1.1 and MQTT 5, including retained messages and persistent sessions
  • Routes filtered or transformed IoT messages to AWS services
  • Offers X.509, SigV4, and custom-authorizer authentication

  Where it doesn't

  • Usage-based pricing varies by component and region
  • Designed for managed cloud deployment rather than self-hosting
  • Integrations center on AWS services

• EMQX — where it wins

  • Connects MQTT with protocols including CoAP, STOMP, and NATS
  • Routes and transforms data with SQL rules and a visual flow designer
  • Offers TLS/mTLS, authentication controls, ACL/RBAC, and audit logs

  Where it doesn't

  • Dedicated Flex starts at $234/month
  • Serverless charges for usage beyond its free monthly quota
  • Plan, capacity, cloud provider, and region affect pricing

• AIAWS IoT Core9.4/10 · Paid

  A managed MQTT broker with device tools and message routing for AWS-centric IoT systems.

  Visit AWS IoT CoreFull verdict →
• EMQX8.9/10 · Free plan · 14-day trial

  A flexible MQTT platform with protocol gateways, durable queues, and cloud or self-hosted options.

  Visit EMQXFull verdict →