Serverless applications with AWS Lambda, API Gateway, Step Functions, EventBridge, SQS/SNS messaging, AppSync GraphQL, Cognito auth, and SAM/Amplify. AWS-certified architects. Mumbai & Hyderabad regions. Free assessment.
Event-driven compute · 15-min max · 10 GB memory · SnapStart · Lambda@Edge · Layers · Container images
REST API · HTTP API (71% cheaper) · WebSocket API · Custom domains · Throttling · Caching
Visual workflows · Standard & Express · Distributed Map · Error handling · 200+ service integrations
Zero idle cost · Millisecond billing · Scale to zero · Free tier: 1M requests/month · ARM 20% cheaper
AWS Lambda is a serverless compute service that runs your code in response to events — without provisioning or managing servers. Combined with API Gateway, Step Functions, EventBridge, SQS/SNS, AppSync, and Cognito, Lambda forms a complete serverless application platform that scales from zero to millions of requests automatically, with millisecond billing and zero idle costs.
PrecisionTech is an Authorized AWS Partner delivering end-to-end serverless services in India — Lambda function design, API Gateway configuration, Step Functions orchestration, EventBridge event routing, SQS/SNS messaging, AppSync GraphQL APIs, Cognito authentication, and 24×7 managed monitoring. With 30+ years of IT infrastructure experience and AWS-certified architects, we ensure your serverless applications are fast, resilient, and cost-optimized.
Flexible engagement models · All include free serverless architecture review
Serverless Assessment
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Managed Serverless
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Enterprise Serverless
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AWS usage costs (Lambda invocations, API Gateway requests, DynamoDB, etc.) are billed separately by AWS or via PrecisionTech consolidated billing. Contact us for custom engagement scoping. All engagements exclude applicable GST.
AWS Lambda is Amazon's serverless compute service — launched in 2014, it fundamentally changed how applications are built by eliminating the need to provision, manage, or pay for idle servers. You write a function in Node.js, Python, Java, .NET, Go, Ruby, Rust, or any language via container images, define a trigger (HTTP request via API Gateway, S3 file upload, DynamoDB stream, SQS message, EventBridge event, CloudWatch schedule, IoT rule, Kinesis stream, or any of 200+ AWS event sources), and Lambda handles everything else: provisioning compute, running your code, scaling to handle any volume of requests, and shutting down when idle — at zero cost.
Serverless computing extends beyond Lambda to a complete application platform: Amazon API Gateway for RESTful and WebSocket APIs, AWS Step Functions for workflow orchestration, Amazon EventBridge for event routing, Amazon SQS & SNS for messaging, AWS AppSync for GraphQL APIs, Amazon Cognito for authentication, Amazon DynamoDB for NoSQL data, and AWS SAM & Amplify for infrastructure-as-code and full-stack development. Together, these services enable you to build entire applications — APIs, workflows, data pipelines, real-time systems — without managing a single server.
As an Authorized AWS Partner in India, PrecisionTech designs, builds, and manages serverless applications — from single-function APIs to enterprise-scale event-driven architectures processing millions of events daily. We handle the entire serverless lifecycle: architecture design, function development, API configuration, workflow orchestration, performance optimization, cold start mitigation, and continuous cost optimization.
Event-driven compute with support for Node.js, Python, Java (.NET, Go, Ruby, Rust, and custom runtimes via container images. Up to 10 GB memory, 15-minute execution, Lambda SnapStart for Java, Lambda@Edge for edge compute, and Lambda Layers for shared dependencies.
Get Quote →Serverless API management — REST API with caching, WAF, and usage plans; HTTP API at 71% lower cost; WebSocket API for real-time bidirectional communication. Custom domains, throttling, request validation, Cognito/JWT authorizers, and canary deployments.
Get Quote →Visual workflow orchestration — Standard Workflows (up to 1 year, exactly-once) and Express Workflows (5 minutes, high throughput). Distributed Map for parallel processing of millions of items. Built-in error handling, retries, and 200+ AWS service integrations.
Get Quote →Serverless event bus connecting AWS services, SaaS applications (30+ integrations), and custom apps. Pattern-based event matching, schema registry for code generation, archive & replay for testing, Event Pipes for point-to-point integration, and Scheduler for cron/rate triggers.
Get Quote →Managed messaging — SQS Standard for unlimited throughput and SQS FIFO for exactly-once ordered processing. SNS pub/sub for fan-out to Lambda, SQS, HTTP, email, SMS, and push notifications. Dead letter queues, message filtering, and batch processing support.
Get Quote →Managed GraphQL & real-time APIs backed by DynamoDB, Lambda, Aurora Serverless, and HTTP data sources. Real-time subscriptions via WebSocket, offline sync with conflict resolution, pipeline resolvers, merged APIs for federated schemas, and built-in caching.
Get Quote →Managed user pools with sign-up, sign-in, MFA, social login (Google, Apple, Facebook), SAML/OIDC enterprise SSO, JWT token issuance, adaptive authentication, and Lambda triggers for workflow customization. Identity Pools for temporary AWS credentials with fine-grained IAM policies.
Get Quote →Infrastructure as code for serverless — AWS SAM for simplified CloudFormation templates with local testing (sam local invoke), guided deployments, and CI/CD generation. AWS Amplify for full-stack serverless development with hosting, auth, APIs, storage, and client SDKs.
Get Quote →End-to-end serverless architecture consulting — event-driven design patterns (CQRS, event sourcing, saga, fan-out/fan-in), microservices decomposition, strangler fig migration from monoliths, DynamoDB data modelling, and Well-Architected serverless reviews.
Get Quote →| Parameter | Limit / Value | Notes |
|---|---|---|
| Maximum Timeout | 15 minutes (900s) | Use Step Functions for longer processes |
| Memory | 128 MB – 10,240 MB | CPU scales proportionally with memory |
| Ephemeral Storage (/tmp) | 512 MB – 10,240 MB | Configurable per function |
| Deployment Package (ZIP) | 50 MB (zipped) | 250 MB unzipped including Layers |
| Container Image | 10 GB | ECR-hosted container images |
| Concurrent Executions | 1,000 default/region | Increase to tens of thousands via support |
| Burst Concurrency | 1,000 (ap-south-1) | 3,000 in US East; varies by region |
| Invocation Payload (sync) | 6 MB | Use S3 for larger payloads |
| Invocation Payload (async) | 256 KB | Put large data in S3, pass reference |
| Layers per Function | 5 | Total unzipped: 250 MB (function + layers) |
| Environment Variables | 4 KB total | Use SSM Parameter Store for larger configs |
| Supported Runtimes | 8+ languages | Node.js, Python, Java, .NET, Go, Ruby, Rust, custom |
| Service | What It Does | Best For | Key Differentiator |
|---|---|---|---|
| Lambda | Event-driven function compute | APIs, data processing, scheduled tasks | Zero servers, ms billing |
| API Gateway | Managed REST / HTTP / WebSocket APIs | Public APIs, microservice frontends | REST (features) vs HTTP (cost) |
| Step Functions | Visual workflow orchestration | Multi-step processes, ETL, approvals | Standard (1yr) vs Express (5min) |
| EventBridge | Serverless event bus + routing | Event-driven architectures, SaaS integration | Schema registry + replay |
| SQS | Managed message queue | Decoupling, load levelling, async work | Standard (throughput) vs FIFO |
| SNS | Pub/sub messaging + notifications | Fan-out, alerts, email/SMS/push | Push to multiple subscribers |
| AppSync | Managed GraphQL + real-time APIs | Mobile backends, dashboards, multi-source | Real-time subs + offline sync |
| Cognito | Serverless auth + user management | Sign-up/login, MFA, social + enterprise SSO | JWT for API Gateway auth |
| DynamoDB | Serverless NoSQL database | Key-value/document storage, sub-10ms reads | On-demand capacity + DAX cache |
| Aspect | AWS Lambda (Serverless) | ECS/EKS on Fargate (Containers) |
|---|---|---|
| Scaling | Zero to thousands instantly | Task-based — scales in seconds |
| Scale to Zero | ✅ Yes — zero cost when idle | ⚠️ Minimum 1 task usually running |
| Execution Limit | 15 minutes max | No limit — runs indefinitely |
| Memory | Up to 10 GB | Up to 120 GB per task |
| Billing | Per millisecond of execution | Per vCPU-second + GB-second |
| Cold Starts | 100ms–3s (mitigatable) | No cold starts (always running) |
| Runtime Control | Managed runtimes + containers | Full control (any container image) |
| Networking | Optional VPC integration | Full VPC, sidecar containers |
| Best For | Event-driven, variable traffic | Long-running, consistent traffic |
PrecisionTech deploys serverless applications on ap-south-1 (primary) + ap-south-2 (DR) for DPDP Act 2023, RBI, and SEBI data localisation compliance.
Lambda functions triggered by Kinesis streams, DynamoDB Streams, or S3 uploads for real-time data transformation, enrichment, and loading. IoT sensor data aggregation, clickstream analytics, log processing, and fraud detection pipelines — processing millions of events per hour with automatic scaling.
Lambda-powered conversational AI — Amazon Lex chatbots with Lambda fulfilment functions, Bedrock generative AI invocations, SageMaker inference endpoints, and custom NLP pipelines. API Gateway WebSocket APIs for real-time chat delivery. Step Functions for multi-turn conversation orchestration and context management.
AWS IoT Core → Lambda → DynamoDB pipelines for ingesting, processing, and storing device telemetry at scale. EventBridge for routing device events to different processing pipelines. Step Functions for device provisioning workflows. SNS for real-time alerts when sensor readings exceed thresholds.
Serverless microservices architecture for e-commerce — Lambda functions for product catalog APIs, cart management, order processing, inventory updates, and payment webhook handling. EventBridge for order events, SQS for fulfilment queues, Step Functions for order state machines, SNS for customer notifications.
EventBridge Scheduler replacing traditional cron — daily report generation, nightly data sync, periodic cleanup jobs, subscription expiry checks, digest email queue population, and database maintenance tasks. No servers running 24×7 for jobs that execute in minutes.
Full-stack serverless mobile backend — Cognito for user authentication, AppSync GraphQL for real-time data sync, Lambda for business logic, DynamoDB for data storage, S3 for media uploads, and SNS for push notifications. Amplify client SDKs for iOS, Android, and Flutter integration with offline support.
| What You Get | PrecisionTech | AWS Direct | Generic IT Vendor |
|---|---|---|---|
| Authorized AWS APN Partner | ✅ Yes | ✅ Yes (1st party) | ⚠️ May not be |
| Serverless architecture design | ✅ Included | ❌ Self-service | ⚠️ Rarely |
| Lambda Power Tuning optimization | ✅ Free | ❌ Not offered | ❌ No |
| Cold start mitigation strategy | ✅ Included | ❌ Self-service | ❌ Rarely |
| Step Functions workflow design | ✅ Fully managed | ❌ Self-service | ⚠️ Basic only |
| EventBridge event architecture | ✅ Managed | ❌ Self-service | ❌ Rarely |
| 24×7 India-based monitoring | ✅ Included | ❌ Extra cost | ⚠️ Extra cost |
| Monthly cost optimization report | ✅ Yes | ❌ No | ⚠️ Rarely |
| Local support in India | ✅ Yes | ❌ Global call | ⚠️ Varies |
| 30-year track record in India | ✅ Since 1995 | ❌ N/A | ⚠️ Varies |
We evaluate your application workloads for serverless suitability — identifying event-driven functions, API endpoints for API Gateway, workflows for Step Functions, messaging patterns for SQS/SNS, and data models for DynamoDB. Deliverable: serverless architecture diagram, service mapping, and cost comparison (serverless vs servers) within 48 hours.
Our architects deploy your serverless application using AWS SAM or CDK — Lambda functions with optimized memory and timeouts, API Gateway with custom domains and throttling, Step Functions state machines, EventBridge rules, DynamoDB tables, Cognito user pools, and CloudWatch dashboards. CI/CD pipelines with canary deployments. First application live in 3–5 days.
PrecisionTech monitors your serverless application 24×7 via CloudWatch and X-Ray, optimizes Lambda memory with Power Tuning, configures Provisioned Concurrency for latency-sensitive functions, tunes API Gateway throttling, monitors DLQ error rates, and delivers monthly executive reports with invocation metrics, error analysis, and cost optimization recommendations.
| Feature | AWS Lambda | Azure Functions | Google Cloud Functions |
|---|---|---|---|
| Launched | 2014 (most mature) | 2016 | 2017 (2nd gen 2022) |
| Max Memory | 10 GB | 14 GB (Premium) | 32 GB (2nd gen) |
| Max Timeout | 15 minutes | 230 min (Premium) | 60 minutes (2nd gen) |
| Cold Start Mitigation | ✅ SnapStart + Prov. Conc. | ✅ Premium pre-warm | ✅ Min instances |
| Edge Compute | ✅ Lambda@Edge | ⚠️ Azure Front Door rules | ⚠️ Cloud CDN only |
| Workflow Orchestration | ✅ Step Functions | ✅ Durable Functions | ✅ Workflows |
| Event Bus | ✅ EventBridge (30+ SaaS) | ✅ Event Grid | ✅ Eventarc |
| India Regions | Mumbai + Hyderabad (2) | Pune + Mumbai + Chennai (3) | Mumbai (1) |
| Container Support | ✅ 10 GB images | ✅ Custom containers | ✅ Cloud Run based |
| Per-Instance Concurrency | 1 request/instance | 1 request/instance | ✅ Up to 1,000 |
Lambda leads in event source breadth, ecosystem maturity, edge compute (Lambda@Edge), and Java cold start optimization (SnapStart). PrecisionTech recommends Lambda for most Indian enterprise serverless workloads.
Every serverless capability PrecisionTech configures, deploys, and manages for Indian businesses
Explore the full range of AWS cloud services PrecisionTech delivers — from compute and storage to AI/ML, DevOps, security, and cost optimization. 200+ services, two India regions, and 30+ years of expertise.
Learn more →Elastic compute with 700+ instance types — Graviton ARM migration, Auto Scaling with predictive policies, Spot Fleet management, ELB load balancing, and EBS storage optimization. For workloads that need full server control alongside your serverless functions.
Learn more →Amazon S3 object storage with 11 nines durability — event triggers for Lambda functions, static website hosting, data lake architecture, Intelligent-Tiering, Glacier archival, and cross-region replication for DR.
Learn more →Fully managed relational databases — MySQL, PostgreSQL, Aurora Serverless, Oracle, SQL Server. Multi-AZ failover, automated backups, Read Replicas, and Performance Insights. Aurora Serverless pairs perfectly with Lambda for serverless data persistence.
Learn more →End-to-end DevOps pipelines — CodePipeline, CodeBuild, CodeDeploy with SAM/CDK integration for serverless CI/CD. Canary deployments for Lambda, automated testing, infrastructure as code, and GitOps workflows for serverless applications.
Learn more →Comprehensive AWS cost management — Lambda Power Tuning, right-sizing serverless resources, Savings Plans analysis, reserved capacity planning, unused resource cleanup, and monthly cost optimization reports with actionable recommendations.
Learn more →Rated 4.9 / 5 from 164+ serverless architecture engagements across India
★★★★★"PrecisionTech architected our entire payment notification system on AWS Lambda with API Gateway and SQS. We process 2 million API calls daily with zero servers to manage. The serverless API platform they built handles 10x traffic spikes during UPI peak hours without any pre-provisioning — and our infrastructure cost dropped 68% compared to the EC2 fleet we were running before."
★★★★★"Our event-driven processing pipeline — built by PrecisionTech using Lambda, EventBridge, and Step Functions — processes 500,000 shipment tracking events daily. Each event triggers a chain of Lambda functions that update tracking status, notify customers via SNS, and feed our analytics DynamoDB tables. What used to take 14 EC2 instances now runs entirely serverless with sub-second processing latency."
★★★★★"The biggest win from going serverless with PrecisionTech was eliminating costs from idle servers. Our policy calculation engine runs on Lambda — it scales to zero when no requests come in and handles 50,000 concurrent calculations during enrollment season. We went from paying for 24×7 server capacity to paying only for actual compute milliseconds. Monthly infrastructure bill dropped from ₹12L to under ₹2L."
Reviews represent actual client feedback from PrecisionTech serverless architecture engagements. Names shortened for privacy.
Expert guides on Lambda optimization, serverless architecture patterns, and cost management — curated by PrecisionTech's AWS-certified architects.
A comprehensive guide to eliminating Lambda cold starts — Provisioned Concurrency sizing, SnapStart configuration for Java, runtime selection impact, deployment package optimization, and keep-alive scheduling patterns with benchmark data from ap-south-1.
Request the Guide →Event-driven design patterns — CQRS, event sourcing, saga orchestration, fan-out/fan-in, circuit breaker, and strangler fig migration. Real-world case studies from Indian fintech, e-commerce, and healthcare serverless deployments.
Get the Playbook →Feature-by-feature comparison of REST API and HTTP API — caching, WAF, usage plans, JWT authorizers, custom domains, throttling, and cost analysis. Decision framework for choosing the right API type based on your security, feature, and budget requirements.
Download the Comparison →A practical guide to choosing between Standard Workflows (long-running, exactly-once) and Express Workflows (high-throughput, at-least-once) — with example state machines for order processing, ETL pipelines, document workflows, and IoT event processing.
Get the Guide →Comprehensive security checklist for serverless applications — IAM least privilege per function, VPC integration, KMS encryption, API Gateway authorization patterns, Secrets Manager, dependency scanning with Inspector, and compliance mapping to DPDP Act 2023 and RBI guidelines.
Get the Checklist →Step-by-step guide to running Lambda Power Tuning — finding the optimal memory configuration that minimizes cost or latency for each function. Includes examples showing 30–50% cost savings and 60–80% latency reduction through memory optimization alone.
Read the Guide →Everything you need to know about AWS Lambda, API Gateway, Step Functions, EventBridge, and how PrecisionTech builds serverless applications for businesses in India.
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