Category: 資訊

In early March 2025, I earned my second AWS certification: the AWS Certified Developer – Associate. This built on the foundation I laid with the Solutions Architect – Associate, but with a much deeper dive into serverless development, event-driven design, and developer tooling on AWS.

Instead of creating a new section, I’ve continued updating and expanding the existing AWS knowledge collection with Developer-specific topics, keeping everything in one place for a cohesive learning path.

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🔥 Focus: Serverless, APIs, and Automation

This certification emphasized building, securing, and deploying cloud-native applications—especially using AWS’s serverless offerings. I focused my preparation on:

• AWS Lambda
  Building scalable, efficient functions with environment configs, permissions, and concurrency controls.
• API Gateway
  Integrating REST and WebSocket APIs with Lambda, adding request transformations, and securing endpoints with JWT-based custom authorizers.
• EventBridge & SQS/SNS
  Designing event-driven applications using EventBridge rules, SQS queues, DLQs, and SNS topics to decouple and scale workflows.
• CI/CD Automation
  Automating deployments with CodePipeline, CodeBuild, and SAM templates—integrated with Git-based workflows.
• Observability & Debugging
  Using CloudWatch Logs, metrics, alarms, and X-Ray to trace Lambda executions, API behavior, and message flow through event pipelines.

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📝 Developer Topics Now in AWS

I’ve integrated all new Developer Associate–relevant material directly into the existing AWS notes section, including updates to:

• Serverless
  Expanded to include advanced Lambda patterns, handler design tips, concurrency tuning, and architectural diagrams.
• DevTools
  New content added covering CodePipeline, CodeBuild setups for serverless projects, and how to define full workflows using SAM CLI.
• Database Storage
  Now includes DynamoDB tips relevant for developers—indexes, partition key planning, TTL, and DynamoDB Streams with Lambda triggers.
• Security and Compliance
  More examples of IAM roles for Lambda, scoped permissions for developer workflows, and secure access patterns for Parameter Store & Secrets Manager.

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🙌 Final Thoughts

The Developer Associate certification challenged me in new ways—from writing code to managing real-world deployments. It’s more than theory—it’s how AWS apps are actually built. If you’re studying or just exploring serverless, feel free to explore my updated AWS section, or reach out with questions or feedback.

Last December, I finally earned the AWS Certified Solutions Architect – Associate certification. It wasn’t a simple weekend prep session—it was the culmination of months of dedication: early mornings before work, late nights after dinner, and countless hours of hands-on practice across real-world scenarios.

To capture every milestone and make review easier, I documented my learning journey with a well-structured set of knowledge notes—hosted on my AWS section. Here’s a deep dive into that journey.

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📚 Core Topics & My Note Collections

These posts served as the backbone of my study plan—check them out for summaries, diagrams, code snippets, and exam-style flashcards:

• CloudFormation & Architecture Patterns
  Modular stack design, nested stacks, parameter input strategies, and template best practices. I included sample templates to showcase blue/green deployments, cross-stack references, and rollback behaviors.
• Networking & VPC
  Subnet types, route tables, NAT gateways, VPC endpoints, cross‑account and cross‑region networking. I experimented with transit gateways and published flow diagrams for clarity.
• Security & Compliance
  IAM roles, policies, fine‑grained permissions, STS, KMS, and service‑linked roles. I also covered AWS Config rules and CloudTrail integration—foundational for both exam success and real-world security.
• Serverless Architecture (Lambda, EventBridge, CloudWatch)
  From writing Lambda functions to architecting event‑driven workflows with EventBridge and designing resilient retry patterns with dead‑letter queues. I shared CLI recipes and monitoring hacks.
• Data & Storage Options
  S3, EBS, RDS, DynamoDB — lifecycle policies, provisioned capacities, encryption, and backup strategies. Got hands-on with lifecycle transitions and RDS read replicas.

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🔍 How My Notes Transformed the Study Experience

1. Active Learning Through Writing
   Turning course material and documentation into blog‑style notes pushed me from passive reading to active recall.
2. Modular Review System
   Each topic living on its own page helped me target weak areas and do quick refreshers before mock exams.
3. Hands-On Templates & Diagrams
   The reusable CloudFormation snippets and network visuals were invaluable—both in the exam simulation and in post-cert projects.

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🙌 Final Thought

Embarking on the AWS certification path was challenging—but creating this knowledge base made it rewarding, repeatable, and shareable. If you’re preparing for the AWS Certified Solutions Architect path, I hope my notes give you a headstart. Interested in walkthroughs on specific modules? Just drop a comment below!