DevOps Report – use of version control by Ops was the highest predictor of both IT performance & organizational performance d. MAKE INFRASTRUCTURE EASIER TO REBUILD THAN TO REPAIR i. Quickly building enables Generally, limit manual testing if automated tests haven’t passed iv. For resource intensive suites, performance tests, IA, execute as frequently as possible i. WRITE OUR AUTOMATED TESTS BEFORE WE WRITE THE validate business goals k. INTEGRATE PERFORMANCE TESTING INTO OUR TEST SUITE i. Discovering performance issues in production is too late ii. Validate performance with automated tests across the entire

vice-workers-for-performance  They are effectively a man in the middle for your page, hence HTTPS only  Most benefit for single page apps for offline support Putting Performance Best Practices Together Create the Perfect SPA by Chris Love (Love2Dev) @ChrisLove http://www.slideshare.net/docluv/putting-performance-best-practices-together-for-a-spa  "We have created the web in our own image, and it is obese" (CEO, Operations, Developer, User)  Sunburst chart how do visitors move through my siteLinux Performance Tools by Brendan Gregg (Netflix) @brendangregg http://www.slideshare.net/brendangregg/velocity

Unlimited. Key Concepts The Three Ways [2] The First Way emphasizes the performance of the entire system, as opposed to the performance of a specific silo of work or department. The outcomes of putting the

initiative is this: exactly how, and how much, will the investment affect and improve business performance? Mark’s reality check: I imagine a sort of Star Chamber—a dimly lit group of serious, hooded faces quote gets me every time. Exactly how and how much will the investment improve the business’s performance? Are they serious?  Do we know exactly how many consumers would buy our new product?  Exactly

given year and the totality of delivered requirements within the entire development period of performance.  During the program execution phase, a high-level program estimate undergoes refinement to

external approval of change. The more organizations relied on change approvals, the worse their IT performance for stability (MTTR, change fail rate) and throughput (deployment lead time, deployment frequency)

Westrum was one of the first to observe the importance of organizational culture on safety and performance. Dr. Westrum defined three types of culture: a. Pathological organizations are characterized

their code in production and help make changes to the infrastructure if necessary to improve performance.  Fairness and social responsibility: The workplace must be fair. Arbitrariness provokes negative