Lambda

Event-Driven Design—Lambda or EC2? | SAA-C03

13 January 2026·1112 words·6 mins

Architecture Drills AWS SAA-C03 FinOps Decision Matrix Lambda S3 Aurora EC2 ECS Event-Driven Architecture

A data analytics startup needs to migrate a Python JSON processing application running thousands of times daily. This drill compares Lambda event triggers, EC2 auto-scaling, ECS containers, and EBS multi-attach solutions through the lens of high availability, scalability, and minimal operational overhead.

Lambda RDS Proxy Pooling Decision Under Load | SAP-C02

12 January 2026·1340 words·7 mins

Architecture Drills AWS AWS SAP-C02 FinOps Decision Matrix RDS Proxy Lambda Aurora Performance Optimization Connection Pooling

A high-performance Lambda application suffers from database connection exhaustion under load. We analyze the optimal combination of RDS Proxy connection pooling and Lambda function optimization to achieve scalable, cost-effective architecture.

Lambda Static Egress IP via NAT Gateway | SAP-C02

12 January 2026·1748 words·9 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix Lambda NAT Gateway VPC Networking Serverless

Explore how to architect serverless applications requiring static egress IPs through NAT Gateway versus Internet Gateway alternatives, with FinOps impact analysis for professional-level decision-making.

Webhook Migration Trade-offs | SAP-C02

11 January 2026·1537 words·8 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix Lambda API Gateway Serverless Migration

A professional-level analysis of migrating on-premises Git webhook integrations to serverless AWS architectures, comparing Lambda Function URLs, API Gateway, App Runner, and ECS Fargate through FinOps and decision trade-off lenses.

Async Migration Cost vs Elasticity | SAP-C02

9 January 2026·1390 words·7 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix SQS EC2 Auto Scaling Lambda Amazon MQ S3 EFS Async Processing

A professional-level analysis of migrating bursty, hour-long file processing from on-premises to AWS, comparing Lambda limitations, EC2 Auto Scaling, MQ vs. SQS, and EFS vs. S3 storage—culminating in a FinOps-driven decision matrix.

API Migration Scalability Trade-offs | SAP-C02

4 January 2026·1357 words·7 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix Application Load Balancer Auto Scaling Lambda API Gateway EKS Route 53

A mobile API running on 5 EC2 instances with Route 53 multi-value routing can’t handle traffic spikes. Should you refactor to serverless, containerize with EKS, add Auto Scaling with Lambda orchestration, or simply front with an ALB? This drill dissects the modernization spectrum for SAP-C02.

Serverless DynamoDB API Integration Trade-offs | SAP-C02

1 January 2026·1103 words·6 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix API Gateway DynamoDB Lambda Serverless

A professional-level analysis comparing API Gateway direct integration vs Lambda-based patterns for DynamoDB exposure, with FinOps quantification and real-world trade-off matrices.

API Rate Limiting Trade-offs (Noisy Neighbor) | SAP-C02

29 December 2025·1129 words·6 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix API Gateway Lambda DynamoDB Throttling Usage Plans

When a few aggressive API clients degrade service quality for all users, should you fix the symptom (retry logic) or the root cause (rate limiting)? This drill explores the architectural decision between client-side resilience and platform-level throttling controls.

Serverless CI/CD Canary vs Rollback | SAP-C02

27 December 2025·1236 words·6 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix Lambda SAM CodeDeploy CloudFormation API Gateway Serverless CI/CD Canary Deployment

A professional-level analysis of Lambda deployment strategies comparing manual CLI scripts, CloudFormation nested stacks, SAM with CodeDeploy canary releases, and API Gateway versioning approaches - with FinOps impact quantification.

High-Throughput Ingestion Decoupling | SAA-C03

27 December 2025·1005 words·5 mins

Architecture Drills AWS SAA-C03 FinOps Decision Matrix Kinesis Data Streams Lambda DynamoDB Decoupling Event-Driven Architecture

When facing 100,000 messages per second with dozens of downstream consumers, this drill explores why streaming architecture fundamentally outperforms batch processing for real-time decoupling.