Editing DevOps and Continuous Delivery (section)

== <span style="color: #FFFFFF;">Applying</span> ==
'''Modeling 'The CI/CD Pipeline' (The path of a single line of code):'''
<syntaxhighlight lang="python">
def run_pipeline(code_change):
    """
    Simulates the stages of a DevOps pipeline.
    """
    stages = ["BUILD", "UNIT_TEST", "SECURITY_SCAN", "DEPLOY_TO_STAGING", "DEPLOY_TO_PROD"]
    
    for stage in stages:
        # Simulate a 95% success rate for each stage
        import random
        if random.random() > 0.05:
            print(f"STAGE: {stage} ... [PASSED]")
        else:
            return f"FAILURE at {stage}: Rolling back changes!"
            
    return "SUCCESS: Update is live for 100% of users."

print(run_pipeline("Fix for Login Button"))
</syntaxhighlight>

; DevOps Landmarks
: '''The 'Phoenix Project'''' → The famous novel that explains DevOps principles through a story about a failing IT department.
: '''Amazon's 'Every 11.6 Seconds' (2011)''' → The moment the world realized the power of DevOps: Amazon announced they were deploying new code on average every 11 seconds.
: '''The DORA Metrics''' → The four key measurements (Deployment Frequency, Lead Time, Change Failure Rate, Time to Restore) used to tell if a company is "Elite" at DevOps.
: '''Chaos Engineering''' → The practice of "Intentionally breaking things" (like unplugging a server) to make sure the system is resilient enough to handle it.
</div>

<div style="background-color: #8B4500; color: #FFFFFF; padding: 20px; border-radius: 8px; margin-bottom: 15px;">