Comparing Application Load Balancer and API Gateway

TLDRApplication Load Balancer (ALB) and API Gateway are both AWS services for distributing traffic, but there are key differences. ALB is a layer 7 load balancer that distributes traffic to multiple backend targets, while API Gateway is a serverless API service. ALB offers features like rate limiting, while API Gateway supports request validation and response mapping. ALB can integrate with different services within a region, while API Gateway can integrate with services across regions and accounts. ALB has a longer timeout limit, while API Gateway has a pay-per-use pricing model.

Key insights

💡ALB is a layer 7 load balancer, while API Gateway is a serverless API service.

💰ALB has a pay-per-use pricing model, while API Gateway has a generous free tier.

🔒API Gateway supports request validation and response mapping, while ALB does not offer such features.

🔄ALB can integrate with services within a region, while API Gateway can integrate with services across regions and accounts.

ALB has a longer timeout limit compared to API Gateway.

Q&A

What is the difference between ALB and API Gateway?

ALB is a layer 7 load balancer for distributing traffic to backend targets, while API Gateway is a serverless API service.

Which service supports rate limiting?

API Gateway supports rate limiting for controlling the number of API calls.

Can ALB integrate with services across accounts?

No, ALB can only integrate with services within the same account and region.

What are the pricing models for ALB and API Gateway?

ALB has a pay-per-use pricing model, while API Gateway has a generous free tier and pay-per-use pricing beyond the free tier.

Does API Gateway support request validation?

Yes, API Gateway supports request validation and response mapping.

Timestamped Summary

00:00ALB and API Gateway are compared based on their features and functionality.

02:24ALB is a layer 7 load balancer that distributes traffic, while API Gateway is a serverless API service.

03:32API Gateway supports request validation and response mapping, while ALB does not offer such features.

05:08ALB can integrate with services within a region, while API Gateway can integrate with services across regions and accounts.

08:31ALB has a longer timeout limit compared to API Gateway.