Course synthesis
How the four chapters connect

The full SRE loop

This course is one operating cycle, not four isolated concepts.

Define Reliability is an explicit target.
Measure SLIs show what users are actually getting.
Govern Error budgets decide how much change the system can safely absorb.
Improve Toil reduction and postmortems remove repeated pain.

Healthy loop

Better automation lowers toil, fewer surprises preserve budget, and clearer learning improves future releases.

Broken loop

No clear target leads to political arguments, repeated incidents, hidden toil, and reactive work dominating engineering time.

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