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Cloud & Infrastructure · head to head

Lambda (AWS Serverless) vs Zerto

Lambda (AWS Serverless) logo

Lambda (AWS Serverless)

Cloud & Infrastructure

Run code without thinking about servers

From
Free
Rated
-
Full reviewWebsite
Zerto logo

Zerto

File Storage & Backup

Continuous data protection with near-zero RPO

From
$5/month
Rated
-
Full reviewWebsite

The short version

  • Only Lambda (AWS Serverless) has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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; Zerto zerto with Azure is listed on UK G-Cloud as a reseller-managed disaster recovery service, not Zerto's own licence pricing, with OS management from £75 per host per month for the public sector
  • They diverge on capability: Lambda (AWS Serverless) covers Function-as-a-Service, Zerto covers Continuous data protection.

Where they differ

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

Attributes where Lambda (AWS Serverless) and Zerto differ
AttributeLambda (AWS Serverless)Zerto
Starting priceFree$5/month
Pricing modelusage-basedsubscription
Free tierYesNo
PlatformsWeb, ApiWindows, Linux, Web
CategoryCloud & InfrastructureFile Storage & Backup
Founded20142009

Identical on both: user rating (Not yet rated).

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 Zerto

  • Continuous data protection
  • Journal-based recovery
  • Automated failover
  • Non-disruptive testing
  • Multi-cloud mobility
  • Long-term retention
  • VMware
  • Hyper-V

Both cover

  • Web support

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 Zerto
  • API backends behind API Gatewaynot Zerto
  • Processing S3, DynamoDB, SQS and Kinesis eventsnot Zerto
  • Scheduled jobs without a always-on instancenot Zerto
  • Edge compute through Lambda@Edgenot Zerto

Zerto

  • Data protectionnot Lambda (AWS Serverless)
  • Disaster recoverynot Lambda (AWS Serverless)
  • Business continuitynot Lambda (AWS Serverless)
  • Ransomware protectionnot Lambda (AWS Serverless)
  • Compliancenot 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

Zerto

  • Zerto with Azure is listed on UK G-Cloud as a reseller-managed disaster recovery service, not Zerto's own licence pricing, with OS management from £75 per host per month for the public sector

Pricing, plan by plan

Lambda (AWS Serverless)

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

Zerto

$5/month
  • Zerto Enterprise Cloud$5/month
    • Continuous protection
    • Journal-based recovery
    • Multi-cloud mobility

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 Zerto if

  • You need continuous data protection.
  • You work on Windows, Linux, Web.
  • You also want journal-based recovery.
Zerto review

Questions people ask

Is Lambda (AWS Serverless) or Zerto better?
Neither clearly leads. Lambda (AWS Serverless) starts at Free and Zerto at $5/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lambda (AWS Serverless) or Zerto?
Lambda (AWS Serverless) has a free tier; the other does not. Paid plans start at Free for Lambda (AWS Serverless) and $5/month for Zerto.
Does Lambda (AWS Serverless) or Zerto run on more platforms?
Lambda (AWS Serverless) runs on Web, Api. Zerto runs on Windows, Linux, Web.
Can I use Lambda (AWS Serverless) for free?
Yes. Lambda (AWS Serverless) has a free tier, so you can try it without paying. Zerto starts at $5/month.
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 Zerto is typically brought in for.
What can Lambda (AWS Serverless) do that Zerto cannot?
Lambda (AWS Serverless) covers Function-as-a-Service, Event-driven execution, Auto-scaling, Pay-per-use. Zerto covers Continuous data protection, Journal-based recovery, Automated failover, Non-disruptive testing. Both handle Web support.
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