GNU Make has no built-in arithmetic capability. In this article, I present a collection of GNU Make macros that implement functions for addition, subtraction, multiplication, and division of integers. Functions are also provided for integer comparisons such as “greater than” and “not equal.” These macros are implemented entirely using GNU Make's built-in string manipulation functions.

DevOps has been front and center lately (2011 and 2012) with many organizations working to embrace deployment its recommended practices—sometimes referred to as agile systems administration. However, Bob Aiello writes that in some ways, DevOps has failed and we need to hold our own retrospective to understand how we can best improve.

Based on his own work experiences, Anupam Kundu has found some patterns (or anti-patterns) that explain why product managers and product teams have a hard time managing their portfolios.

Chris Riley writes that when an organization is considering the cloud, it has to consider its approach as well. The cloud was built on the principles of initiating things fast, and only what you need when you need it. The cloud was not built for people who follow the mantras of  “set it and forget it” and “plan for everything ahead of time.”