AWS Lambda

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Run code without managing servers, pay only for compute time

Serverless Cloud & Infrastructure Hosting & Deployment

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4.6(1,079 across the web)

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Reviews onG2Capterra

1079 reviews tracked

The Bottom Line

Entry price

Paid plans only

Biggest pro

Industry-standard serverless platform

Biggest con

Cold starts can affect latency

TL;DR - AWS Lambda

AWS Lambda lets you run code without provisioning servers-just upload your function and it scales automatically
It executes code in response to events from 200+ AWS services, charging only for compute time used
Free tier includes 1M requests/month, then $0.20 per million requests

Pricing: Paid only

Best for: Enterprises & pros

4.6/5 across review platforms

What is AWS Lambda?

Editorial review

Lambda runs your code without servers to manage. Upload a function, configure a trigger, and AWS handles scaling, patching, and availability. You pay only when code executes. Functions respond to HTTP requests, process queue messages, react to database changes-any event can trigger execution. The runtime handles everything except your business logic. Lambda changed how developers think about backends. Instead of maintaining servers, you write functions and let AWS handle the rest.

Available on: Web

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourceaws.amazon.com ↗

Pros & Cons

Pros

Industry-standard serverless platform
Integrates with entire AWS ecosystem
Scales automatically to any load
Pay only for compute time used
Supports many languages and runtimes

Cons

Cold starts can affect latency
Complex pricing model
15-minute execution time limit
Debugging can be challenging
Vendor lock-in with AWS services

Ratings Across the Web

4.6(1,079 reviews)

Ratings aggregated from independent review platforms. Learn more

Key Features

Serverless computeEvent-drivenAuto-scalingPay-per-useMultiple runtimesAWS integration

Pricing Plans

Free Tier

1M free requests/month
400,000 GB-seconds compute
Never expires
Included with AWS account

Pay-as-you-go

$0.20 / million

$0.20 per 1M requests
$0.0000166667/GB-second (x86)
Memory from 128 MB to 10 GB
Billed per millisecond

Graviton2 (ARM)

$0.16 / million

34% better price performance
$0.0000133334/GB-second
Same functionality as x86
Recommended for cost savings

Savings Plans

Up to 17% off

1 or 3 year commitment
Compute Savings Plans
Flexible across regions
Significant discount

Calculate your cost View full pricing

How AWS Lambda's pricing compares

At $1.42/mo, AWS Lambda is mid-range of its 3 direct competitors ($0.4 to $19/mo across the set).

Azure Functions

$0.4

AWS Lambda

$1.42

Cloudflare Workers

Netlify Functions

$19

Entry paid plan, monthly.

Reviews

4.6/5

Across 1,079 verified user reviews on G2, Capterra

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Best AWS Lambda Alternatives

Top alternatives based on features, pricing, and user needs.

Azure FunctionsPaid

Serverless compute for event-driven applications on Azure

4.4

Google Cloud FunctionsFreemium

Serverless compute on Google Cloud

4.4

Cloudflare WorkersFreemium

Run serverless JS/Wasm at the edge with instant cold starts

4.5

Netlify FunctionsFreemium

Serverless functions for Netlify sites

Vercel FunctionsFreemium

Run server-side code without managing servers, with automatic scaling and low latency.

See all Serverless tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

AWS Lambda vs Azure FunctionsHead-to-head: features, pricing, who wins AWS Lambda vs Google Cloud FunctionsHead-to-head: features, pricing, who wins AWS Lambda vs Cloudflare WorkersHead-to-head: features, pricing, who wins

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AWS Lambda FAQ

Is Lambda free?

Generous free tier: 1 million requests and 400,000 GB-seconds per month forever. Many small applications run entirely within free tier.

What is AWS Lambda?

Lambda is AWS's serverless compute service. Run code without managing servers. Pay only for compute time used. Scales automatically.

Lambda vs EC2?

Lambda is serverless with no server management. EC2 gives full control but requires management. Lambda for events and APIs; EC2 for long-running workloads.

What languages does Lambda support?

Node.js, Python, Java, C#, Go, Ruby, and custom runtimes. Node.js and Python are most popular. Can bring any language via custom runtime.

What are Lambda cold starts?

Cold start is delay when Lambda initializes a new container. Can be 100ms to several seconds depending on runtime. Keep functions warm for latency-sensitive apps.

Source: aws.amazon.com