Personal Tech Blog | hidekazu-konishi.com

Here I plan to share my technical knowledge and experience, and my interests in the subject. Note: this tech blog is a space for sharing my personal views and ideas, and it does not represent the opinions of any company or organization I am affiliated with.
The main purpose of this blog is to deepen my own technical skills and knowledge, to create an archive where I can record and reflect on what I have learned and experienced, and to share information.
My interests span Amazon Web Services (AWS), AI-augmented development, AI agent engineering, cloud architecture, and related topics including DevOps, MLOps, AIOps, and Generative AI.
The articles are based on my personal learning and practical experience. Of course, I am not perfect, so there may be errors or inadequacies in the articles. I hope you will enjoy this technical blog with that in mind. Thank you in advance.

Personal Tech Blog Entries

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  1. AWS Elastic Load Balancing Decision Guide - Choosing and Operating Application, Network, and Gateway Load Balancers
  2. AWS Hybrid Connectivity Decision Guide - Direct Connect, Site-to-Site VPN, and Resilient On-Premises Integration
  3. Amazon Route 53 DNS Architecture Guide - Routing Policies, Resolver, Private Hosted Zones, and Hybrid DNS
  4. AWS Messaging and Event Routing Decision Guide - Choosing Between SQS, SNS, EventBridge, and Kinesis
  5. Amazon API Gateway Decision Guide - REST, HTTP, and WebSocket APIs and Integration Patterns
  6. AWS Lambda Concurrency and Scaling Guide - Reserved and Provisioned Concurrency, Throttling, and Event Source Scaling
  7. Amazon EKS Networking Deep Dive - VPC CNI, IP Address Management, Security Groups for Pods, and Pod Connectivity
  8. Amazon DynamoDB Capacity and Global Tables Guide - Capacity Modes, Auto Scaling, Warm Throughput, and Multi-Region Design
  9. Amazon RDS and Aurora High Availability Guide - Multi-AZ, Read Replicas, RDS Proxy, and Global Database Failover
  10. AWS Disaster Recovery Strategies Guide - Backup and Restore, Pilot Light, Warm Standby, and Multi-Site Active-Active
  11. Amazon S3 Security and Access Control Guide - Bucket Policies, IAM, Access Points, Block Public Access, and Encryption
  12. AWS Secrets Manager and Parameter Store Decision Guide - Storing, Rotating, and Accessing Secrets and Configuration
  13. Claude Code Skills Complete Guide - Creating, Testing, and Distributing Agent Skills
  14. Agent Skills Security Vetting Guide - Static Inspection of SKILL.md and Malicious Skill Patterns
  15. Claude Code Plugins Complete Guide - Bundling Skills, Hooks, Agents, and MCP Servers for Team Distribution
  16. Claude Code Compaction and Long-Session Operations Guide - Managing Context Across Long and Multi-Session Work
  17. Anthropic Claude Model Migration Guide - Upgrading Prompts and Workloads Across Model Generations
  18. MCP Server Testing and Debugging Guide - Inspector, Integration Tests, Transports, and CI Regression
  19. AWS VPC Connectivity Decision Guide - VPC Peering, Transit Gateway, PrivateLink, VPC Lattice, and Cloud WAN
  20. AWS Step Functions JSONata and Variables Practical Guide - Modern Workflow Authoring Beyond JSONPath
  21. AWS VPC Network Troubleshooting Guide - Decision Trees for Security Groups, NACLs, Route Tables, and Flow Logs
  22. Amazon CloudFront Origin Architecture Guide - Origin Access Control, Origin Shield, Failover, and VPC Origins
  23. Amazon Bedrock AgentCore Policy Implementation Guide - Cedar-Based Agent Authorization and Default-Deny Design
  24. Amazon Bedrock AgentCore Evaluations Practical Guide - Built-In Evaluators and CI/CD Regression Testing for AI Agents
  25. Claude Code Extension Layer Decision Guide - Choosing Among Skills, Subagents, Hooks, and Plugins
  26. Strands Agents Multi-Agent Pattern Selection Guide - Agents-as-Tools, Swarm, Graph, and Workflow
  27. AI Agent Memory Design Guide - Working, Long-Term, and Procedural Memory with Forgetting and Staleness Management
  28. MCP Tool Poisoning Defense Guide - Client-Side Defense in Depth for AI Agents
  29. Amazon S3 Vectors Design Decision Guide - When to Use It, When Not to, and Tiered Designs with Amazon OpenSearch Service
  30. AWS Lambda Durable Functions Practical Guide - Checkpoint and Replay Determinism and When to Use Step Functions Instead
  31. Amazon Aurora DSQL Design Decision Guide - Distributed SQL Between Amazon DynamoDB and Aurora PostgreSQL
  32. Cost-Optimization Guide to Rolling Out Claude Code and Claude Desktop Across Your Organization - Choosing Delivery Models and Finding Break-Even
  33. Practical Guide to Deploying Claude Code and Claude Desktop Behind a Corporate Proxy - Domains, MSIX, NTLM/Kerberos, and VPN Coexistence
  34. Claude Code on Pay-As-You-Go API Billing - Anthropic API, Amazon Bedrock, and Google Cloud Vertex AI
  35. Claude Code Subagents and Multi-Agent Orchestration Guide - Delegation, Parallel Fan-Out, and Custom Agent Definitions
  36. Claude Code Hooks Complete Guide - Deterministic Enforcement Across the Tool Lifecycle
  37. Claude Agent SDK Complete Guide - Building Custom Agents Beyond the CLI
  38. Anthropic Claude API Prompt Caching and Token Efficiency Guide - Cache Breakpoints, Batch Processing, and Context Engineering
  39. Claude Code in CI/CD and Headless Automation - Running the Agent Unattended in Pipelines
  40. AWS History and Timeline regarding Amazon VPC - Overview, Functions, Features, Summary of Updates, and Introduction
  41. AWS History and Timeline regarding Amazon CloudWatch - Overview, Functions, Features, Summary of Updates, and Introduction
  42. AWS History and Timeline regarding Elastic Load Balancing - Overview, Load Balancer Types, Features, Summary of Updates, and Introduction to ELB
  43. AWS History and Timeline regarding Amazon Aurora - Overview, Engines, Features, Summary of Updates, and Introduction
  44. AWS History and Timeline regarding Amazon SNS - Overview, Functions, Features, Summary of Updates, and Introduction to Amazon Simple Notification Service
  45. AWS History and Timeline regarding AWS CloudTrail - Overview, Functions, Features, Summary of Updates, and Introduction
  46. AWS History and Timeline regarding Amazon SageMaker - Overview, Functions, Features, Summary of Updates, and Introduction
  47. AWS History and Timeline regarding AWS Organizations - Overview, Functions, Features, Summary of Updates, and Introduction
  48. Claude Code Operator's Handbook
  49. AWS History and Timeline regarding Amazon Bedrock - Overview, Functions, Features, Summary of Updates, and Introduction
  50. Amazon Bedrock Glossary - A Reference for AI Engineers and Architects
  51. AWS History and Timeline regarding AWS Identity and Access Management - Overview, Functions, Features, Summary of Updates, and Introduction to IAM
  52. AI Agent Engineering Glossary - Memory, Tools, Orchestration, and Protocols Explained
  53. AWS History and Timeline regarding Amazon EC2 - Overview, Functions, Features, Summary of Updates, and Introduction
  54. AWS IAM Glossary - Principal, Permission Boundary, SCP, RCP, ABAC, and Cedar Explained
  55. Amazon Bedrock AgentCore Master Index - A Hub for AgentCore Articles and Decision Patterns
  56. AWS History and Timeline regarding Amazon DynamoDB - Overview, Functions, Features, Summary of Updates, and Introduction
  57. AWS History and Timeline regarding Amazon CloudFront - Overview, Functions, Features, Summary of Updates, and Introduction
  58. AWS Networking Glossary - VPC, Transit Gateway, PrivateLink, and VPC Lattice Explained
  59. AWS History and Timeline regarding Amazon EKS - Overview, Functions, Features, Summary of Updates, and Introduction
  60. AWS Lambda Master Index - A Hub for Lambda Articles
  61. AWS History and Timeline regarding Amazon API Gateway - Overview, Functions, Features, Summary of Updates, and Introduction
  62. AWS Database Glossary - RDS, Aurora, DynamoDB, DocumentDB, and Neptune Explained
  63. AWS Observability Glossary - CloudWatch, X-Ray, Application Signals, and OpenTelemetry Explained
  64. MCP Server Implementation Reference - Anthropic, OpenAI, Google, Cloudflare, and AWS
  65. IAM Policy Evaluation Logic Step-by-Step - Explicit Deny, SCP, RCP, Resource Policy, Identity Policy, Permission Boundary, and Session Policy
  66. HTTP Security Headers Complete Reference - CSP, HSTS, COOP, COEP, Permissions Policy
  67. AWS Generative AI History and Timeline - From SageMaker JumpStart to Bedrock AgentCore
  68. Anthropic Claude Model Release Timeline - Model Family Tree, Capability Evolution, and Platform Availability
  69. Cryptography Glossary for Engineers - AES, RSA, ECDSA, HKDF, Envelope Encryption, and TLS Explained
  70. AWS History and Timeline regarding AWS CloudFormation - Overview, Functions, Features, Summary of Updates, and Introduction
  71. Amazon DynamoDB Master Index - A Hub for DynamoDB Design, Key Modeling, and Capacity Planning Articles
  72. AWS History and Timeline regarding Amazon RDS - Overview, Engines, Features, Summary of Updates, and Introduction
  73. AI Agent Defense in Depth Model (AIDDM) - WAF, Guardrails, Reasoning Sandbox, and Output Filter
  74. IAM Anti-Patterns - Real-World Mistakes and Their Root Causes
  75. Amazon Bedrock Model Catalog 2026
  76. Claude Code Features and Settings Reference 2026
  77. AWS History and Timeline regarding Amazon ECS - Overview, Functions, Features, Summary of Updates, and Introduction
  78. AWS Service Quotas - A Practical Cheat Sheet for Major AWS Services
  79. AWS Verified Permissions and Cedar Policy Language Complete Guide
  80. MCP Server Ecosystem Reference 2026
  81. AWS VPC Lattice Complete Guide - Service-to-Service Networking Across VPCs and Accounts
  82. AWS Postmortem Case Studies - Design Lessons from AWS Public RCAs
  83. Regex Master Course - Interactive Recipes by Job Function
  84. Practical Git Techniques - Rebase, Worktree, Hooks, and Partial Clone for Mid-Level Engineers
  85. DynamoDB Key Design Dictionary: PK/SK, GSI/LSI Selection, Hot Partition Avoidance, and Re-Keying Patterns
  86. Code Review Checklist and Anti-Pattern Catalog: A Reviewer's Reference for Modern and AI-Augmented Codebases
  87. Indie Dev Guide: From Domain Acquisition to Live Site with AWS Route 53, S3, CloudFront, and ACM
  88. AWS Well-Architected - Practical Self-Audit Checklist by Pillar
  89. Route 53 Health Check and Failover - Common Pitfalls and Designs
  90. AWS Lambda Cold Start Mitigation Guide - Provisioned Concurrency, SnapStart, and Code-Level Techniques
  91. VSCode Extensions and Keybindings - Complete Guide by Use Case
  92. AWS Multi-Account Operational Patterns - Control Tower, Organizations, SCPs
  93. Software Design Principles in Practice - SOLID, DDD, Clean Architecture
  94. Web Performance Checklist for Core Web Vitals - LCP, INP, and CLS
  95. Architecture Decision Records: Templates and Operational Patterns for Teams That Actually Maintain Them
  96. AWS Tagging Strategy: Complete Guide for Operations, Automation, and Security
  97. VPC Design Review Checklist - CIDR, Subnets, Transit Gateway
  98. Amazon S3 Object Key Design Best Practices - Performance and Partitioning
  99. PWA Advanced Implementation Guide - Service Worker Cache Strategies, Push, and Background Sync
  100. Diagram Notation Selection — C4 vs PlantUML vs Mermaid
  101. Comparing Terraform, AWS CDK, AWS SAM, and CloudFormation - A Practitioner's Guide to Mental Models, State Management, and Migration
  102. Incident Triage Flowcharts - Network, DB, and Application Layer
  103. Self-Hosted Static Site Analytics - A Privacy-First Implementation Guide
  104. Claude Code Harness and Environment Engineering: Designing the Frontline Where Local AI Agents Actually Live
  105. Claude Code Getting Started - Why Knowing About Local AI Agents Changes Everything
  106. CloudWatch Logs Insights Query Cookbook: Practical Recipes for Incident Investigation, Cost Analysis, and Security Audits
  107. Amazon DynamoDB Single Table Design Complete Guide - Access-Pattern-Driven Data Modeling Patterns
  108. AWS IAM Identity Center Complete Setup Guide - Multi-Account SSO Design Patterns from Organization Structure to ABAC
  109. MCP Server on AWS Lambda Complete Guide - Building Model Context Protocol Servers with Streamable HTTP and OAuth 2.1
  110. Amazon Bedrock AgentCore Production Operations Guide - Observability, Cost Optimization, and Disaster Recovery
  111. Amazon Cognito Federation Complete Implementation Guide - Google, Apple, Microsoft, OIDC, and SAML
  112. AWS PrivateLink and VPC Endpoints Complete Guide - Interface, Gateway, and Resource Endpoint
  113. AWS WAF for Generative AI - Prompt Injection Defense Implementation Patterns
  114. CloudFront KeyValueStore and Edge Functions Cookbook: A/B Testing, Geo Routing, Feature Flags, and Token Validation
  115. EventBridge Pipes Event-Driven Architecture Implementation Patterns
  116. AWS Step Functions Distributed Map - Practical Patterns and Pitfalls for Large-Scale Parallel Workloads
  117. Enterprise AI Agent Environment Design Notes Part 3: Cloud Selection, Cost, and Operations
  118. Enterprise AI Agent Environment Design Notes Part 2: Implementing SharePoint ACL and Permission Controls
  119. Enterprise AI Agent Environment Design Notes Part 1: Comparing the Three Major Clouds and Designing Your Architecture
  120. Amazon Bedrock AgentCore Implementation Guide Part 4: Multi-Agent Orchestration
  121. Amazon Bedrock AgentCore Implementation Guide Part 3: Building a 4-Stack CDK Architecture with an Observability Pipeline
  122. Amazon Bedrock AgentCore Implementation Guide Part 2: Multi-Layer Security with Identity, Gateway, and Policy
  123. Amazon Bedrock AgentCore Implementation Guide Part 1: Runtime, Memory, and Code Interpreter Patterns
  124. Beyond Self-Disruption: The Paradigm Shift Software Engineers Need in the AI Era
  125. Amazon Bedrock AgentCore Beginner's Guide - AI Agent Development from Basics with Detailed Term Explanations
  126. Japan AWS Top Engineer and Japan All AWS Certifications Engineer: Special Award for 6 Consecutive Years and The 6 Growth Principles
  127. Using Claude 3.7 Sonnet Vision Capabilities on Amazon Bedrock to Verify, Regenerate, and Automate Image Generation with Stable Diffusion 3.5 Large
  128. Using Amazon Bedrock for titling, commenting, and OCR (Optical Character Recognition) with Claude 3.7 Sonnet
  129. Validating and Regenerating Videos Using Amazon Nova Pro Vision Model on Amazon Bedrock (Amazon Nova Reel Edition)
  130. Amazon Bedrock Models as of 2024 - An Analysis of the Comprehensive Model Catalog
  131. Using Amazon Bedrock for titling, commenting, and OCR (Optical Character Recognition) with Amazon Nova Pro
  132. Using Amazon Nova Pro Vision Capabilities on Amazon Bedrock to Verify, Regenerate, and Automate Image Generation with Amazon Nova Canvas
  133. AI and Machine Learning Glossary for AWS - Knowledge Gained While Studying for AWS Certified AI Practitioner and AWS Certified Machine Learning Engineer - Associate
  134. Evaluating OCR Accuracy of Claude on Amazon Bedrock and Amazon Textract Using Similarity Metrics
  135. How to Add an Approval Flow to AWS Step Functions Workflow (AWS CodePipeline and Amazon EventBridge Edition)
  136. How to Add an Approval Flow to AWS Step Functions Workflow (AWS Systems Manager Automation and Amazon EventBridge Edition)
  137. How to Add an Approval Flow to AWS Step Functions Workflow (AWS Systems Manager Automation Edition)
  138. Using Claude 3.5 Sonnet Vision Capabilities on Amazon Bedrock to Verify, Regenerate, and Automate Image Generation with Amazon Titan Image Generator G1
  139. Using Amazon Bedrock to repeatedly generate images with Stable Diffusion XL via Claude 3.5 Sonnet until requirements are met
  140. Using Amazon Bedrock for titling, commenting, and OCR (Optical Character Recognition) with Claude 3.5 Sonnet
  141. AWS History and Timeline regarding Amazon Cognito - Overview, Functions, Features, Summary of Updates, and Introduction
  142. AWS History and Timeline regarding AWS Lambda - Overview, Functions, Features, Summary of Updates, and Introduction
  143. AWS CloudFormation Templates and AWS Lambda Custom Resources for Associating AWS Certificate Manager, Lambda@Edge, and AWS WAF with a Website on Amazon S3 and Amazon CloudFront Cross-Region
  144. Deploy AWS Cloudformation Stack Cross-Region with AWS Lambda Custom Resources
  145. Using Amazon Textract for OCR(Optical Character Recognition)
  146. AWS History and Timeline regarding Amazon Simple Queue Service - Overview, Functions, Features, Summary of Updates, and Introduction to SQS
  147. Using Amazon Bedrock for titling, commenting, and OCR (Optical Character Recognition) with Claude 3 Haiku
  148. Using Amazon Bedrock for titling, commenting, and OCR (Optical Character Recognition) with Claude 3 Opus
  149. Using Amazon Bedrock for titling, commenting, and OCR (Optical Character Recognition) with Claude 3 Sonnet
  150. Setting up DKIM, SPF, DMARC with Amazon SES and Amazon Route 53 - An Overview of DMARC Parameters and Configuration Examples
  151. Summary of AWS Application Migration Service (AWS MGN) Architecture and Lifecycle Relationships, Usage Notes - Including Differences from AWS Server Migration Service (AWS SMS)
  152. Basic Information about Amazon Bedrock with API Examples - Model Features, Pricing, How to Use, Explanation of Tokens and Inference Parameters
  153. Summary of Differences and Commonalities in AWS Database Services using the Quorum Model - Comparison Charts of Amazon Aurora, Amazon DocumentDB, and Amazon Neptune
  154. AWS Amplify Features Focusing on Static Website Hosting - Relationship and Differences between AWS Amplify Hosting and AWS Amplify CLI
  155. Host a Static Website configured with Amazon S3 and Amazon CloudFront using AWS Amplify CLI
  156. Host a Static Website using AWS Amplify Hosting in the AWS Amplify Console
  157. Reasons for Continually Obtaining All AWS Certifications, Study Methods, and Levels of Difficulty
  158. Summary of AWS CloudFormation StackSets Focusing on the Relationship between the Management Console and API, Account Filter, and the Role of Parameters
  159. AWS History and Timeline regarding AWS Key Management Service - Overview, Functions, Features, Summary of Updates, and Introduction to KMS
  160. AWS History and Timeline regarding Amazon EventBridge - Overview, Functions, Features, Summary of Updates, and Introduction
  161. AWS History and Timeline regarding Amazon Route 53 - Overview, Functions, Features, Summary of Updates, and Introduction
  162. AWS History and Timeline regarding AWS Systems Manager - Overview, Functions, Features, Summary of Updates, and Introduction to SSM
  163. AWS History and Timeline regarding Amazon S3 - Focusing on the evolution of features, roles, and prices beyond mere storage
  164. How to create a PWA(Progressive Web Apps) compatible website on AWS and use Lighthouse Report Viewer
  165. AWS History and Timeline - Almost All AWS Services List, Announcements, General Availability(GA)

Written by Hidekazu Konishi