AWS Lambda Reviews

Name: AWS Lambda
Brand: Amazon Web Services (AWS)
Rating: 4.3 (90 reviews)

4.3 out of 5

90 reviews
94% willing to recommend

What is AWS Lambda?

AWS Lambda is a compute service that lets you run code without provisioning or managing servers. AWS Lambda executes your code only when needed and scales automatically, from a few requests per day to thousands per second. You pay only for the compute time you consume - there is no charge when your code is not running. With AWS Lambda, you can run code for virtually any type of application or backend service - all with zero administration. AWS Lambda runs your code on a high-availability compute infrastructure and performs all of the administration of the compute resources, including server and operating system maintenance, capacity provisioning and automatic scaling, code monitoring and logging. All you need to do is supply your code in one of the languages that AWS Lambda supports (currently Node.js, Java, C# and Python).

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AWS Lambda is the #1 ranked solution in top Compute Service solutions. PeerSpot users give AWS Lambda an average rating of 8.6 out of 10. AWS Lambda is most commonly compared to Apache Spark: AWS Lambda vs Apache Spark. AWS Lambda is popular among the large enterprise segment, accounting for 64% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a financial services firm, accounting for 18% of all views.

Helped 875,455 peers since 2012

Featured AWS Lambda reviews

Rajaraman Ramachandran

Co-Founder and CTO at Gamucopia Creatives

AWS Lambda needs to improve cold start time. Some AWS Lambda functions require a cold start, and if you need AWS Lambda to provide quick responses, you need some of the AWS Lambdas to be always on, which is risky. We need AWS Lambda's cold start time to be reduced so that we can use it much faster than now. We need a better way to handle the cold start. We should be able to start AWS Lambda much before in a predictable way instead of just calling and then having it start.

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reviewer2706945

Assistant Manager at a tech vendor with 10,001+ employees

The features or capabilities of AWS Lambda that I have found most valuable are how easily usable and integratable it is with normal functions or SQS, SNS, or event-related things. If I want to hit any event-related tasks, it can easily provide me all those configurations in the AWS part. It is very easy to use and the way we can use it with multiple languages is also good. The features of AWS Lambda that have most significantly improved the workflow efficiency for my customers are the limits they have; they can increase those limits so that it is better for all the clients. There is a limit of a particular amount of RAM or memory that can be allocated. This limitation should be increased to double at least so that it is better for bigger serverless engines to work properly.

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Andrew-Wong

AWS Developer at Centrica

Having a better preview would be helpful. Sometimes, if my Lambda code is too big, it can be inconvenient as I'm unable to see my code when it exceeds a certain size. AWS has a limit, like a three-megabyte limit, beyond which I cannot view or edit the code easily.

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Compute Service Market Share Distribution
Product	Market Share (%)
AWS Lambda	16.6%
AWS Batch	15.6%
Apache Spark	11.4%
Other	56.4%

Type	Title	Date
Category	Compute Service	Nov 25, 2025	Download
Product	Reviews, tips, and advice from real users	Nov 25, 2025	Download

Suggested products

Title	Rating	Mindshare	Recommending
Apache Spark	4.2	11.4%	90%	68 interviews Add to research
Apache NiFi	3.9	9.3%	92%	13 interviews Add to research

Key learnings from peers

Last updated Nov 16, 2025

Valuable Features

AWS Lambda offers numerous advantages users find valuable: seamless integration with AWS services, serverless architecture eliminating server management, support for multiple programming languages, and cost-efficient scalability. Users appreciate its agility in event-triggered tasks, easy deployment, and flexibility in using diverse languages. The API Gateway and automatic scaling ensure efficient performance. Its pay-as-you-go model, integration with CI/CD pipelines, and real-time processing enhance business efficiency without additional infrastructure overhead.

"The features or capabilities of AWS Lambda that I have found most valuable are how easily usable and integratable it is with normal functions or SQS, SNS, or event-related things."
"The most valuable features are its serverless nature, which allows deployment without worrying about infrastructure scaling or maintenance."
"The scalability of AWS Lambda is impressive; it integrates seamlessly with other AWS services, which allows for robust and flexible solutions."

Room for Improvement

AWS Lambda requires improvements in integration with external platforms and enhanced interface usability. Cold start delays and execution time limits pose challenges for time-sensitive tasks. Increasing support for more programming languages, better debugging, and user-friendliness would be beneficial. Users seek better monitoring tools and reduced runtime limits. Enhanced security, pricing adjustments, and more comprehensive language compatibility are also needed to improve user experience and performance. Improved documentation and a more intuitive setup process would assist novices.

"AWS Lambda needs to improve cold start time. Some AWS Lambda functions require a cold start, and if you need AWS Lambda to provide quick responses, you need some of the AWS Lambdas to be always on, which is risky."
"Having a better preview would be helpful."
"The runtime could be improved. There are certain use cases where I need a Lambda function to run longer."

ROI

AWS Lambda offers significant ROI due to its usage-based pricing, eliminating infrastructure costs and providing savings up to 90%. Its pay-as-you-go model ensures cost-efficiency during fluctuating demand. Lambda’s serverless design and automatic scaling enhance performance and reliability. Users highlight substantial financial benefits compared to traditional on-premise setups, noting cost savings from not needing maintenance or infrastructure management. Pricing is well-rated, with its flexibility catering to varying traffic levels.

Pricing

AWS Lambda users indicate the service is cost-effective, utilizing a pay-as-you-go model with no upfront costs. There's an initial free tier, followed by charges based on usage and compute time. While AWS provides significant savings for low-frequency tasks, high usage can lead to increased expenses. Many find the pricing competitive, noting it as more economical than traditional server-based solutions, particularly for small applications or intermittent workloads. The monthly and yearly licensing options accommodate varying needs.

"AWS Lambda is not expensive for micro testing but is expensive if used for long deployment or long services."
"The solution is free of cost for the first year, and after that, it becomes expensive."
"It costs maybe less than $10 per month in my use case."

Popular Use Cases

Organizations primarily use AWS Lambda for serverless computing, enabling automated workflows and event-driven architectures. It handles data processing, API backend services, and real-time notifications. Common implementations include microservice development, backup and data transformation, and integration with AWS services like S3 and Redshift. Users appreciate Lambda's automatic scaling, cost efficiency, and support for multiple programming languages, allowing versatile applications without extensive server management.

Service and Support

AWS Lambda support is frequently described as responsive and helpful, although users find it expensive without an enterprise plan. Some users rely on comprehensive documentation to resolve issues independently, with many mentioning they rarely require assistance due to the platform's stability. Others praise the knowledgeable team for quick, effective responses, especially for critical issues. While support is deemed satisfactory by most, some suggest enhancements, like increased support personnel or alternative communication channels.

Deployment

The initial setup for AWS Lambda is generally straightforward with minimal complexity, especially for those familiar with AWS environments. While newcomers might find it slightly challenging and require some coding knowledge, experienced users appreciate the provided documentation and intuitive processes. With AWS tools like the console, setup can often be completed in minutes. Complexity can arise for those without technical proficiency, but most find it manageable with AWS infrastructure.

Scalability

AWS Lambda demonstrates exceptional scalability. It adapts to varying workloads and user needs automatically, scaling up to handle increased demands efficiently. Enterprises and technology companies benefit from its flexibility without requiring additional infrastructure. Although some users note potential limits during peak demand, its integration with other AWS services enhances scalability, making it ideal for fluctuating traffic environments. Its cost-effectiveness is appreciated, though high-traffic applications may find expenses substantial.

Stability

AWS Lambda is perceived as highly stable, showing reliability and strong performance. Users note consistent stability even with scaling, though some mention constraints like execution time limits and occasional time-out errors. Functionality remains reliable despite infrastructure variability, and most users rate the stability between eight to nine out of ten. There's minimal latency or bugs, and it handles workloads effectively, ensuring high availability and integration with AWS services for monitoring and managing stability concerns.

These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.

Download our AWS Lambda Buyer's Guide for additional reliable information.

Review data by company size

By reviewers
Company Size	Count
Small Business	33
Midsize Enterprise	13
Large Enterprise	40

By reviewers

By visitors reading reviews
Company Size	Count
Small Business	68
Midsize Enterprise	31
Large Enterprise	178

By visitors reading reviews

Top industries

By visitors reading reviews

Financial Services Firm

18%

Computer Software Company

12%

Manufacturing Company

Educational Organization

University

Insurance Company

Government

Retailer

Healthcare Company

Comms Service Provider

Performing Arts

Recreational Facilities/Services Company

Real Estate/Law Firm

Marketing Services Firm

Construction Company

Energy/Utilities Company

Media Company

Wholesaler/Distributor

Renewables & Environment Company

Outsourcing Company

Pharma/Biotech Company

Transportation Company

Legal Firm

Non Profit

Logistics Company

Agriculture

Consumer Goods Company

Hospitality Company

Compare AWS Lambda with alternative products

Learn more about AWS Lambda

You can use AWS Lambda to run your code in response to events, such as changes to data in an Amazon S3 bucket or an Amazon DynamoDB table; to run your code in response to HTTP requests using Amazon API Gateway; or invoke your code using API calls made using AWS SDKs. With these capabilities, you can use Lambda to easily build data processing triggers for AWS services like Amazon S3 and Amazon DynamoDB process streaming data stored in Amazon Kinesis, or create your own back end that operates at AWS scale, performance, and security.

AWS Lambda customers

Netflix

Author info	Rating	Review Summary
Co-Founder and CTO at Gamucopia Creatives	4.5	I've used AWS Lambda for five years within a serverless architecture; it scales automatically and is easy to use, though cold start times need improvement. Overall, it's effective for lightweight tasks and integrates well with other AWS services.
Assistant Manager at a tech vendor with 10,001+ employees	4.0	I've used AWS Lambda for years to build serverless solutions for clients. It's easy to integrate and scalable, though monitoring and memory limits need improvement. Setup is fast, and we've had no stability or reliability issues.
AWS Developer at Centrica	4.0	No summary available
DevOps Engineer \| Cloud Architect & Automation Specialist \| Kubernetes, Terraform, Ansible, AWS EKS at Phoenix Marketing & Advertising	4.5	I use AWS Lambda for real-time media processing due to its event-driven architecture, automatic scaling, and cost-effective pay-per-use model. Despite limitations like execution timeout, it's preferred over alternatives for its integration with AWS services.
AWS Cloud Architect at a healthcare company with 10,001+ employees	4.0	No summary available
AWS Academy Accredited Instructor - ACF & CCA at APU	4.5	No summary available
Senior Business Solutions Consultant at Conn3ct	4.5	No summary available
IT Support Specialist at Trinity University	3.5	No summary available