Site Reliability Engineering - Evolution of Automation

Consistency

Automation significantly enhances consistency in processes by reducing human error. Joe Zack highlights that even simple tasks, when repeated frequently, are prone to mistakes, such as misspelling common words or using the wrong end of a toothbrush 1. Michael Outlaw adds that automation allows tasks to be executed quickly and efficiently by anyone on the team, eliminating the need for specialized knowledge 2.

The consistency really is key, I think more than even some of the other ones that come up here.

--- Joseph Bironas

This approach not only saves time but also ensures that processes are carried out uniformly every time.

   

Google Strategy

Google's automation strategy is deeply rooted in their preference for creating software rather than buying it, allowing for better integration and control. Michael Outlaw explains that Google's core is software, and they avoid using software they don't own to prevent reliance on tribal knowledge 3. Joseph Bironas notes that Google invests in platforms that can be improved and extended over time, which aligns with their long-term vision 4.

Google wants to invest in platforms, right? Because when they build those platforms, then they're things that they can improve and extend over time.

--- Joseph Bironas

This strategy ensures that Google maintains control over their processes and can scale efficiently.

   

Automation Maturity

The maturity model for automation highlights different levels of sophistication, from basic scripts to self-correcting systems. Joe Zack describes the ideal scenario where systems are self-sufficient and don't require manual intervention, reducing the risk of "bit rot" in glue code 5. Michael Outlaw discusses the ultimate goal of achieving autonomous systems that manage themselves without human input 6.

The ultimate dream is that your system doesn't need automation and also that all your systems are going to work together.

--- Joe Zack

This progression from manual to autonomous systems represents a significant leap in efficiency and reliability.