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Blog Posts
​Top 10 Most Viewed Posts
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AWS Lambda Cookbook  - Part 4 - Environment Variables Best Practices
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AWS Lambda Cookbook  - Part 5 - Input Validation Best Practices
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Guide to AWS Serverless & Lambda Testing Best Practices - Part 1
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Guide to Serverless & Lambda Testing - Part 2 - Testing Pyramid
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Learn How to Write AWS Lambda Functions with Three Architecture Layers
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Ran Isenberg
Mar 37 min read
AWS Service Catalog: A Game Changer for Platform Engineering
Discover how AWS Service Catalog helps Platform Engineers balance flexibility, security, and governance—transforming delivery at scale

Ran Isenberg
Feb 107 min read
5 Serverless Architecture Patterns You Should Stop Using (And What to Do Instead)
Avoid common AWS Serverless architecture pitfalls! Learn 5 outdated patterns & the best practices to replace them for better services

Ran Isenberg
Jan 276 min read
How Social Engineering Phishing Works: My Real-Life Encounter
Fell for a phishing attack using social engineering? I did—almost. Here’s how it worked, the tech behind it, and tips to stay safe.


Yaron Ben Ezra
Jan 157 min read
Simplify Security, Governance, and WAF Management with AWS Firewall Manager
Learn how to simplify AWS security, manage WAF rules, and enforce policies across accounts with AWS Firewall Manager, with AWS CDK code


Ran Isenberg
Dec 31, 20246 min read
2024 Summary & Come Write with Me
Review the year 2024 from my personal perspective and how to become a guest writer on my website

Ran Isenberg
Dec 16, 20244 min read
Protect Your API Gateway with AWS WAF using CDK
learn about AWS Web Application Firewall (WAF) and use CDK code to protect an REST API served by an API Gateway and enable metrics and logs


Ran Isenberg
Dec 6, 202410 min read
AWS re:Invent 2024: My Serverless Takeaways
AWS re:Invent 2024 exciting new services and features launched from a Serverless developer perspective.


Ran Isenberg
Nov 18, 20249 min read
AWS AppSync Events - Serverless WebSockets Done Right or Just Different?
AWS AppSync Events lets you broadcast realtime data with Serverless WebSockets. Learn how it works, use cases and diff from API GW Websocket


Ran Isenberg
Nov 13, 20247 min read
AWS WAF Essentials: Securing Your SaaS Services Against Cyber Threats
Learn about the AWS Web Application Firewall (WAF), what it is for, tips, and insights for visibility, ownership, governance and more


Ran Isenberg
Oct 21, 20248 min read
Understanding AWS Availability Zones: Boosting SaaS Resilience and Uptime
learn about AWS availability zones, what they are, why they are essential for SaaS Resilience and uptime


Ran Isenberg
Oct 2, 202411 min read
AWS re:Invent 2024 — My Selection Of Sessions
In this post, you will find my opinionated list of AWS re:Invent sessions that I found relevant to Serverless or highly interesting


Ran Isenberg
Sep 23, 20245 min read
Guide to AWS re:Invent - Tips & Tricks
my top tips for making the most out of the AWS re:Invent conference while navigating it like a pro.

Ran Isenberg
Sep 10, 20247 min read
A Critical Look at AWS Lambda Extensions: Pros, Cons, and Recommended Use Cases
In this post, I will share my thoughts about AWS Lambda extensions, the good and the bad, and when you should use or should not use them


Ran Isenberg
Aug 13, 20246 min read
Build a Serverless Web Application on Fargate ECS with AWS CDK
Build a secure Fargate ECS cluster with an application load balancer and a web application using Python CDK code.


Ran Isenberg
Jul 24, 202410 min read
Reflecting on Serverless: Current State, Community Thoughts, and Future Prospects
Reflect on the current state of serverless, share my thoughts about articles from the community, and discuss the future of serverless


Marcos Henrique
Jul 22, 20248 min read
Unlocking High Throughput with Amazon SQS FIFO Queues
Learn how SQS FIFO works and achieve optimal throughput with detailed insights and CDK TypeScript code examples.

Ran Isenberg
Jul 8, 20247 min read
Build a Chatbot with Amazon Bedrock: Automate API Calls Using Powertools for AWS Lambda and CDK
Build a chatbot with Amazon Bedrock agents using Powertools for AWS. Learn to automate Lambda API calls via OpenAPI with bedrock agents.

Ran Isenberg
Jun 18, 202410 min read
Amazon CloudFormation Custom Resources Best Practices with CDK and Python Examples
Learn of CloudFormation custom resources, their types, and best practices using AWS CDK, Powertools for AWS, Pydantic, and crhelper.


Ran Isenberg
Jun 3, 202413 min read
AWS Security Best Practices: Leveraging IAM for Service-to-Service Authentication and Authorization
AWS security best practices for service to service authentication, authorization and cross-account access with IAM policies and python code.


Noa Gelber
May 20, 20247 min read
Optimize AWS Lambda with Dynamic Provisioned Concurrency
Reduce AWS Lambda cold starts and optimize costs with dynamic provisioned concurrency. Master it with our AWS CDK Python guide.

Ran Isenberg
Apr 29, 20246 min read
AWS Serverless Diversity: Multi-Language Strategies for Optimal Solutions
Learn from my experience developing a performance-oriented serverless service. I'll share insights on multi-language strategies.


koby aharon
Apr 15, 202411 min read
Unleashing Resilience: A Practical Guide to Chaos Engineering in Serverless Architectures
We'll explore chaos engineering in AWS serverless architecture, using AWS FIS for fault injection and providing example code.


Ran Isenberg
Apr 2, 20249 min read
Optimizing Costs in the Cloud: Embracing a FinOps Mindset
learn how a frugal organization thrives on a FinOps mindset, crucial for optimizing costs and maximizing efficiency in cloud services.


Ran Isenberg
Mar 18, 20247 min read
AWS Lambda Cold Starts Explained: What They Are & How to Reduce Them
Learn what are Lambda cold starts, when to reduce them, and how. Context matters for optimizing user experience.
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