My name is Mark Smithson and this site is a collection of my thoughts on various topics.

I am a software developer with an interest in product development and have started and run a number of companies. Other interests include classic cars, motor racing, skiing and cycling

I hope you find the content on this site interesting and would love to hear from you if you have any comments or thoughts.

Latest stories

UUsing Branching with Terraform

10.03.20191 Min Read — In Cloud

When writing the code for my article on Paired Security Groups in AWS , I made use of terraform to setup the various different configuration I wanted to demonstrate. This triggered some thoughts…

PPaired Security Groups in AWS

09.03.20193 Min Read — In Cloud

Security Groups are virtual firewalls for instances and other resources in AWS. They allow you to define sets of rules for incoming and outgoing traffic. EC2 instances can have multiple security…

HHigh Output Management

05.01.20193 Min Read — In Books

This book was first published in 1983 and revised in 1995 by Andrew Grove who was the Chairman and CEO of Intel. Some of the examples in the book show it's age. For example the impact of the…


03.01.20191 Min Read — In General

As you can see this site is currently being built. It is built using Gatsby and the Minimal Blog Starter https://github.com/LekoArts/gatsby-starter-minimal-blog . It is deployed using Netlify . Once…