Serverless Application Development with AWS Lambda

Launch production-ready applications with our serverless application development services. Our AWS-certified engineers use AWS Lambda, Amazon API Gateway, and event-driven architecture to build secure workloads that scale with demand, without adding server management to your engineering backlog.
AWS Premier Tier Services Partner · 200+ cloud launches delivered · Event-driven apps on AWS Lambda and Amazon API Gateway, built to scale
Serverless is often a strong fit for APIs, event processing, background jobs, scheduled workloads, automation, and applications with unpredictable demand. It is not the best choice for every workload, so we assess the application before recommending the right approach.

How It Works

01

Discovery Workshop

We review the current application, traffic patterns, integrations, security requirements, and cost drivers, and identify where serverless can create value and where another AWS service may be more appropriate.

02

Architecture Design

We design an event-driven architecture using AWS Lambda, Amazon API Gateway, Amazon EventBridge, queues, databases, and supporting AWS services, defining data flows, failure paths, security controls, and measurable performance targets.

03

Implementation

We build the functions, APIs, infrastructure as code, automated tests, and CI/CD pipelines, and configure permissions, secrets, logging, tracing, retries, queues, and failure handling before launch.

04

Optimize and Scale

We test latency, concurrency, error handling, scaling behavior, and cost under realistic workloads, then tune memory, execution time, provisioned capacity, logging, and connected AWS services based on the results.

Why Choose Avahi for AWS Serverless Development

Premier Tier AWS expertise

Work with senior AWS engineers without waiting through a lengthy hiring cycle.

Built inside your AWS environment

Retain control of your code, data, infrastructure, and application outputs.

Production-ready delivery

Infrastructure as code, CI/CD, least-privilege access, monitoring, and failure handling are designed into the application.

Architecture based on your workload

We recommend AWS Lambda where it fits and other AWS services where they offer a better technical or commercial outcome.

Support beyond launch

Move from proof of concept to production and ongoing managed services without changing delivery partners.

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Where Our Serverless Applications Deliver Measurable Impact

  • Scale APIs and digital products. SaaS platforms, mobile apps, retail systems, and media products that need to handle traffic spikes without overprovisioning infrastructure.
  • Automate event-driven workflows. Healthcare claims, legal intake, order processing, and manufacturing data flows triggered by uploads, database changes, or system events.
  • Launch AI features in production. AI agents, chatbots, document extraction, and recommendation tools connected through AWS Lambda and Amazon API Gateway.
  • Modernize fragile backends. Startup MVPs and legacy services that are slow, unstable, or expensive to maintain, rebuilt on secure AWS serverless architecture.

Related AWS Services

Serverless work often connects to broader delivery and modernization services:

Case Studies

Attorney Live: An Event-Driven Serverless Pipeline for Legal Queries

Attorney Live needed fast, accurate answers pulled from large volumes of legal documents inside its tele-law platform. We designed an event-driven serverless workflow on AWS: documents landing in Amazon S3 trigger AWS Lambda functions that generate embeddings and index the content, Amazon Bedrock parses each query against that index, and Amazon API Gateway routes requests to the right pipeline. Additional Lambda services added Spanish and English translation and captured user feedback in real time.

Why Avahi for AWS Serverless Development

AWS Premier Tier Services Partner.

The highest AWS partner tier, held since December 2024.

Six AWS Competencies

Generative AI, Migration and Modernization, Managed Service Provider, DevOps, Small and Medium Business, and Healthcare.

200+ cloud launches delivered

Backed by 200+ AWS certifications across the team.

AWS-funded engagements for eligible companies.

Through our partnership with AWS, eligible companies may receive partial or full funding for an approved proof of concept, depending on projected AWS consumption and project scope. Eligibility is assessed during the discovery call.

Right tool for the workload

We recommend containers or a hybrid AWS architecture when long-running or intensive workloads need them, rather than forcing serverless.

Avahi helped us replace a fleet of EC2 instances with Lambda. Monthly compute spend fell 42 percent and new features ship in half the time.

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Priya Patel

VP Engineering, QuickCart

96%

client satisfaction

40%

Average cost savings after migration
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Masterworks – Cutting ML Hosting Costs 75 Percent with AWS Lambda Orchestration

Challenge

Masterworks was locked into an expensive SaaS ML platform that pushed hosting fees sky-high, slowed model iteration, and risked vendor lock-in.

Solution

Avahi rebuilt the end-to-end pipeline on AWS, using Lambda functions to trigger Matillion ETL jobs, SageMaker training, and S3 updates, migrating 200 propensity models in just eight weeks.

Results

Hosting and licensing spend reduced 75 percent

200 ML models migrated before contract renewal came due

Faster training and inference, improving campaign speed

Internal team enabled with detailed run-books for easy self-service

Frequently
Asked Questions

What Is AWS Lambda?

AWS Lambda is a serverless compute service that runs code without requiring your team to provision or manage servers. It handles infrastructure tasks such as capacity provisioning, scaling, server maintenance, and patching.

How Does Serverless Application Development Work on AWS?

Serverless application development uses managed AWS services to run code, process events, expose APIs, and store data without requiring your team to maintain the underlying servers. AWS Lambda provides compute, while services such as Amazon API Gateway, EventBridge, DynamoDB, Amazon SQS, and AWS Step Functions support APIs and event-driven workflows.

What Is Event-Driven Architecture?

Event-driven architecture connects services through events rather than tightly coupling every component. One service can publish an event when something happens, while other services process or route that event.

Which Languages Does AWS Lambda Support?

AWS Lambda provides managed runtimes for Node.js, Python, Java, .NET, and Ruby. Other languages, including Go and Rust, can be used through OS-only or custom runtimes. Functions can also be packaged as compatible container images.

Will My Users Notice Cold Starts?

Cold-start impact depends on factors such as the runtime, deployment package, initialization logic, and traffic pattern. We measure actual latency and can use Provisioned Concurrency or other optimization strategies for latency-sensitive functions.

How Is Pricing Calculated?

AWS Lambda charges are generally based on the number of requests and compute duration, with memory allocation affecting the compute cost. The complete architecture may also incur costs from Provisioned Concurrency, Amazon API Gateway, logging, storage, data transfer, databases, and other connected AWS services.

Talk to an AWS Expert

Ready to go serverless?

No commitment needed. An AWS Solutions Architect will contact you within one business day.
No commitment needed. An AWS Solutions Architect will contact you within one business day.

Download Solution Brief