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Latest Posts
Effective Actions for AWS IAM
TL;DR I made Effective IAM Actions, a small tool to expand wildcards "*"in IAM Policy Actions so that you can see explicitly what permissions are granted by a policy. It supports multiple statements in each policy, Allow and Deny
Managing Secure String Parameters in CloudFormation
This was a nifty little trick I just learnt from my colleague James the other day that is definitely worth sharing more widely. While CloudFormation does not support SecureStrings for AWS::SSM::Parameters resources, you can can fudge it with
Don't use Tags to Manage Permissions in AWS
The main problem is this: By using tags for authorisation, you have a multitude of completely new - per-service - actions that can be used to compromise your security posture.
Best Practices for AWS Step Functions
Recently I've been working with Step Functions in my day-to-day work, as well as in my personal projects, and I decided to write this post as a way of articulating the ins-and-outs of Step Functions I've learnt while using them.
Serverless Cost Containment
Serverless soultions is can be incredibly cheap due to their event-based nature - if your system isn't working, you pay barely anything for it. But if you're not careful, serverless can still result in some nasty surprises when it comes to costs.
AWS Reserved Instances Cheatsheet
Reserved Instances (RIs) are a great way to save some money if you've got consistent AWS EC2 usage, without needing to make changes to your instances!
Cleaning up Lambda Logs with CloudFormation
Is your CloudWatch Logs console full of old log groups? Got 50 pages of Lambda log groups? Don't worry, I have the solution for you! The issue here is not the cost; While there is a cost associated with keeping
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