AWS Lambda: 10 concrete use cases to automate your business

Serverless automation within reach of all businesses

AWS Lambda executes code in response to events without requiring you to manage servers. You pay only for the actual execution time, down to the millisecond. For SMBs, Lambda is a powerful automation tool that replaces manual scripts, cron jobs on servers and repetitive processes. Here are 10 concrete use cases.

1. Web form processing

A contact form on your website triggers a Lambda function through API Gateway. Lambda validates the data, sends a confirmation email to the customer through SES, stores the request in DynamoDB and notifies your team in Slack. The cost is a few cents per month for hundreds of submissions.

2. Automatic image resizing

When an image is uploaded to an S3 bucket, Lambda automatically resizes it into several formats (thumbnail, medium, high resolution) and stores them in another bucket. This on-demand processing replaces a server dedicated to image processing.

3. Scheduled report generation

An EventBridge trigger launches a Lambda function every Monday morning. Lambda queries your database, compiles the week’s data, generates a PDF report and emails it to the management team. All of this without human intervention.

4. Data synchronization between systems

Lambda synchronizes data between your CRM, your ERP and your website. When a new customer is created in the CRM, Lambda updates the site’s database and sends a welcome email. This real-time synchronization eliminates manual data entry.

5. Monitoring and custom alerts

Lambda analyzes CloudWatch logs and sends custom alerts when specific conditions are detected: a recurring error, an unusual traffic spike, a suspicious access attempt. Alerts are sent by email, SMS or Slack depending on severity.

6. Webhook processing

Lambda receives and processes webhooks from third-party services: Stripe payment notifications, Shopify events, GitHub updates. Each webhook triggers a specific process with no server waiting permanently.

7. Automatic resource cleanup

Lambda automatically deletes temporary resources: files older than 30 days in S3, obsolete EBS snapshots, old logs. This regular cleanup reduces storage costs without manual intervention.

8. Backend API for mobile applications

Lambda with API Gateway provides a scalable backend for your mobile application. The infrastructure adapts automatically to the number of users. You pay nothing when no one is using the application.

9. CSV/Excel file processing

Lambda automatically processes files dropped into S3: product data imports, invoice processing, report consolidation. The file is parsed, validated and the data is inserted into the database.

10. Chatbot and AI

Lambda connected to Amazon Bedrock creates an intelligent chatbot that answers customer questions by drawing on your knowledge base. The cost is proportional to the number of conversations, with no fixed infrastructure.

LCMH designs serverless solutions on AWS for businesses in Alsace.

To understand serverless architecture, read our article on serverless on AWS for SMBs.

Sources

1. AWS, AWS Lambda Use Cases. aws.amazon.com/lambda
2. AWS, AWS Lambda Pricing. aws.amazon.com/lambda/pricing
3. AWS, Serverless Patterns. serverlessland.com/patterns