Editing DevOps and Continuous Delivery (section)

== <span style="color: #FFFFFF;">Understanding</span> ==
DevOps is understood through '''Automation''' and '''Feedback Loops'''.

'''1. The "Wall of Confusion"''':
In traditional companies, developers "Toss their code over the wall" to the operations team and say: "It worked on my machine; good luck!"
* DevOps breaks this wall.
* Developers are now responsible for how their code "Runs" in the real world.
* This forces them to write code that is easy to monitor and fix.

'''2. The Pipeline (Automation)''':
The goal of DevOps is to "Automate everything that can be automated."
* **Commit**: Developer saves code.
* **Build**: The computer automatically compiles the code.
* **Test**: Thousands of automated tests run in seconds.
* **Deploy**: If tests pass, the code is automatically sent to the servers.
* This removes "Human Error" from the release process.

'''3. The Feedback Loop''':
Instead of waiting for users to "Call and complain," DevOps uses "Real-time Monitoring."
* If the app gets 1% slower after an update, the DevOps system sees it instantly and can "Roll back" to the old version automatically.

'''The 'Shift Left' Principle''': The practice of moving testing and security "Left" in the timeline (earlier in the process) so that bugs are caught while the developer is still writing the code.
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