Stop accepting “that’s not supported” from SaaS platforms. Functions let you add custom business logic between any services, solving integration challenges that were previously impossible or cost $50K+ to build. Turn platform limitations into competitive advantages.

Solve Integration Challenges

Add custom logic between any services. Transform data, apply business rules, coordinate multiple systems that don’t talk to each other.

$100s Instead of $50K+

Build custom integrations for the cost of coffee, not enterprise consulting projects. Deploy instantly, scale automatically.

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Real-World Examples

See how businesses use functions to solve everyday problems:
Problem: Handle customer orders, process payments, manage inventory
Order Processing Function
export const handler = async (event) => {
  const { items, customerId, paymentMethod } = JSON.parse(event.body);
  
  // Validate inventory
  const available = await checkInventory(items);
  if (!available) {
    return { statusCode: 409, body: 'Items out of stock' };
  }
  
  // Process payment
  const payment = await processPayment(paymentMethod);
  
  // Create order
  const order = await createOrder({ items, customerId, payment });
  
  // Send confirmation
  await sendOrderConfirmation(order);
  
  return {
    statusCode: 201,
    body: JSON.stringify({ orderId: order.id, total: order.total })
  };
};
What it handles:
  • ✅ Inventory validation
  • ✅ Secure payment processing
  • ✅ Order creation and tracking
  • ✅ Customer notifications

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Three Types of Functions

Choose the right function type for your use case:

Request Functions

Process incoming HTTP requestsRequest functions run when users visit URLs or submit forms. They handle login, payment processing, API calls, and any user interaction that needs an immediate response.

Response Functions

Modify responses before sending to usersResponse functions automatically enhance responses from request functions. They add analytics, security headers, personalized content, or dynamic pricing without changing your core logic.

Task Functions

Run scheduled or background jobsTask functions execute on schedules or delays without user interaction. They send emails, generate reports, clean up data, and automate workflows in the background.

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Why Developers Choose Functions

Instant Deployment

Write code, hit deploy. Your function is live and handling requests in seconds, not hours.

Automatic Scaling

Handle one request or one million. Functions scale automatically based on demand.

No Infrastructure

Skip the DevOps complexity. No servers, containers, or Kubernetes to manage.

Pay Per Use

Only pay when your functions run. No idle server costs or infrastructure overhead.

Built-in Security

Authentication, encryption, and security headers included. Focus on features, not security.

Real-time Monitoring

See function performance, errors, and usage in real-time. Debug issues instantly.

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Common Use Cases

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Best Practices for Success

Keep Functions Small

Do one thing wellEach function should have a single responsibility. This makes them easier to test, debug, and maintain.

Handle Errors Gracefully

Always plan for failureUse try-catch blocks, return meaningful error messages, and implement proper HTTP status codes.

Use Environment Variables

Keep secrets secureNever hardcode API keys or passwords. Use environment variables for configuration and secrets.

Monitor and Log

Know what’s happeningAdd logging for debugging and monitoring for performance. Track errors and usage patterns.

Optimize Performance

Keep it fastMinimize cold starts, cache when possible, and use efficient algorithms and data structures.

Test Thoroughly

Prevent issues earlyWrite unit tests, integration tests, and use local development tools to catch issues before deployment.

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Ready to Start Building?

Quick Start Guide

Deploy your first function in under 2 minutes. Step-by-step tutorial with working examples.

Local Development

Set up your development environment and test functions locally before deployment.
New to serverless? Functions are just code that runs in the cloud. You write the logic, we handle the infrastructure. Start with our Quick Start guide to deploy your first function in minutes.