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Lambda (AWS Serverless) vs CloudAMQP

Lambda (AWS Serverless) logo

Lambda (AWS Serverless)

Cloud

Run code without thinking about servers

From
Free
Free plan
Yes
Visit Lambda (AWS Serverless)Full review
CloudAMQP logo

CloudAMQP

Cloud

Managed RabbitMQ and LavinMQ clusters, hosted and fully managed

From
Free
Free plan
Yes
Visit CloudAMQPFull review

The short version

  • CloudAMQP is a managed RabbitMQ hosting service billed per second.
  • Lambda (AWS Serverless) is free; CloudAMQP starts at $19/mo.
  • Where Lambda (AWS Serverless) falls short: provisioned concurrency, used to avoid cold starts, is charged separately at $0.0000041667 per GB-second whether or not the function runs.
  • Where CloudAMQP falls short: free tier messaging limits are low: 1-2M messages/month.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Lambda (AWS Serverless) and CloudAMQP actually diverge.

Attributes where Lambda (AWS Serverless) and CloudAMQP differ
AttributeLambda (AWS Serverless)CloudAMQP
Pricing modelUsage-basedFreemium
PlatformsWeb, APIWeb

Identical on both: starting price (Free), free tier (Yes), category (Cloud).

Not yet recorded: founded for CloudAMQP.

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Lambda (AWS Serverless)

  • Function-as-a-Service
  • Event-driven execution
  • Auto-scaling
  • Pay-per-use
  • Multiple languages
  • Concurrency limits
  • Dead Letter Queues
  • Environment variables

Only in CloudAMQP

Nothing recorded that Lambda (AWS Serverless) does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Lambda (AWS Serverless)

  • Event-driven functions without managing serversnot CloudAMQP
  • API backends behind API Gatewaynot CloudAMQP
  • Processing S3, DynamoDB, SQS and Kinesis eventsnot CloudAMQP
  • Scheduled jobs without a always-on instancenot CloudAMQP
  • Edge compute through Lambda@Edgenot CloudAMQP

CloudAMQP

  • Message queue servicesnot Lambda (AWS Serverless)
  • Message brokers for distributed systemsnot Lambda (AWS Serverless)
  • RabbitMQ and LavinMQ hostingnot Lambda (AWS Serverless)
  • Asynchronous task processingnot Lambda (AWS Serverless)

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Lambda (AWS Serverless)

  • Billed on two axes at once, $0.20 per million requests plus $0.0000166667 per GB-second of duration, so memory settings change the bill as much as traffic does
  • Provisioned concurrency, used to avoid cold starts, is charged separately at $0.0000041667 per GB-second whether or not the function runs
  • Ephemeral storage beyond the included 512 MB is metered
  • Lambda@Edge costs $0.60 per million requests, three times the standard request rate
  • VPC use and cross-region data transfer carry EC2 charges on top

CloudAMQP

  • Free tier messaging limits are low: 1-2M messages/month
  • Free tier connection limits are restrictive: 20-40
  • Multi-tenant plans have queue limits (200-2,000 max)
  • Dedicated plans expensive at scale: up to $14,995-$17,495/month
  • Extra disk space add-on at $0.35/month per GB may add significant cost

Pricing, plan by plan

Lambda (AWS Serverless)

Free
  • Free TierFree
    • 1M free requests/month
    • 400,000 GB-seconds/month
    • Always free

CloudAMQP

Free
  • LavinMQ - Loyal Lemming (Free)Free
    • 2 million messages per month
    • 40 connection limit
    • 200 queue maximum
  • RabbitMQ - Little Lemur (Free)Free
    • 1 million messages per month
    • 20 connection limit
    • 100 queue maximum
  • LavinMQ - Elegant Ermine$19/mo
    • 20 million messages per month
    • 200 connections
    • 2,000 queue maximum
  • RabbitMQ - Tough Tiger$19/mo
    • 10 million messages per month
    • 100 connections
    • 1,000 queue maximum

Which should you pick?

Choose Lambda (AWS Serverless) if

  • You need function-as-a-service.
  • You want to start without paying.
  • You work on Web, API.
  • You also want event-driven execution.
Lambda (AWS Serverless) review

Choose CloudAMQP if

  • You want to start without paying.
CloudAMQP review

Questions people ask

Is Lambda (AWS Serverless) or CloudAMQP better?
Neither clearly leads. Lambda (AWS Serverless) starts at Free and CloudAMQP at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lambda (AWS Serverless) or CloudAMQP?
Lambda (AWS Serverless) starts at Free and CloudAMQP at Free.
Does Lambda (AWS Serverless) or CloudAMQP run on more platforms?
Lambda (AWS Serverless) runs on Web, API. CloudAMQP runs on Web.
Can I use Lambda (AWS Serverless) for free?
Both have a free tier, so you can try either at no cost before committing.
What is Lambda (AWS Serverless) best used for?
Lambda (AWS Serverless) is most often used for event-driven functions without managing servers, api backends behind api gateway, processing s3, dynamodb, sqs and kinesis events, scheduled jobs without a always-on instance. Of those, event-driven functions without managing servers and api backends behind api gateway are not what CloudAMQP is typically brought in for.
What can Lambda (AWS Serverless) do that CloudAMQP cannot?
Lambda (AWS Serverless) covers Function-as-a-Service, Event-driven execution, Auto-scaling, Pay-per-use.

Answered from the vendors’ own pages

Lambda (AWS Serverless): Is there a free tier for AWS Lambda?

Yes. AWS Lambda offers a free tier including 1 million requests per month, 400,000 GB-seconds per month, and 100 GB monthly response streaming.

Source
CloudAMQP: Does CloudAMQP offer free plans?

Yes, CloudAMQP offers free tiers: LavinMQ Loyal Lemming with 2M messages/month, and RabbitMQ Little Lemur with 1M messages/month. Both include connection and queue limits.

Source
Lambda (AWS Serverless): How is AWS Lambda charged?

Lambda charges $0.20 per million requests. Duration charges are $0.0000166667 per GB-second for x86 (up to 6 billion GB-seconds/month in US East Ohio with tiered pricing). Ephemeral storage over the included 512 MB costs $0.0000000309 per GB-second. Provisioned Concurrency costs $0.0000041667 per GB-second with a 5-minute minimum.

Source
CloudAMQP: What is the cheapest paid plan?

Both LavinMQ Elegant Ermine and RabbitMQ Tough Tiger cost $19/month. LavinMQ includes 20M messages/month with 200 connections; RabbitMQ includes 10M messages/month with 100 connections.

Source
Lambda (AWS Serverless): What are Lambda Durable Functions pricing?

Lambda Durable Functions include operations at $8.00 per million (start execution, steps, waits). Data written costs $0.25 per GB. Data retention is $0.15 per GB-month with configurable 1-90 day retention (default 14 days).

Source
CloudAMQP: How are messages charged on CloudAMQP?

CloudAMQP plans include monthly message quotas. All plans are charged on a per-second basis with monthly billing cycles.

Source
CloudAMQP: What add-ons are available?

CloudAMQP offers Virtual Private Cloud add-on at $99/month, and extra disk space at $0.35/month per GB (25-2,000 GB available).

Source
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