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Reconstruct the enterprise SDLC1 / 3

1 min lesson

The forward stream

Explain the practical point behind "The methodology sets the cadence of the stream and says nothing about what happens inside any stage."

Step 1 of 3

The forward streamidea → production

Each stage is also a queue: work piles up waiting for design review, for a free QA environment, for a change-advisory-board slot, for a human reviewer. The methodology sets the cadence of the stream and says nothing about what happens inside any stage.

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Full explanation

The return loop

The return loopincident → postmortem → corrective change

When something breaks in Operate, it generates an incident, which generates a postmortem, which generates corrective changes:

  • Config hardening.
  • A missing test.
  • A runbook fix.
  • Alert tuning.
  • A dependency bump.

Those changes re-enter the forward stream at Build. This loop is where the cheapest wins sit, so it is the first place an AI coding agent should work in a cautious org.

Forward stream traits

New value, higher uncertainty

Higher blast radiusHow much breaks if a change goes wrong; the scope of potential damage. Press Enter for the full definition. per change

Design + product judgment heavy

Where leadership's attention sits

Return-loop traits

Restorative, well-scoped work

Low blast radiusHow much breaks if a change goes wrong; the scope of potential damage. Press Enter for the full definition., high toil

Generates ITGCIT General Controls. The baseline IT controls auditors check: who can change what, how changes get approved and how systems are run. Press Enter for the full definition.-friendly evidence

Where Cursor lands first, quietly

Interview move

Asked 'where would you start a Cursor pilot in a risk-averse bank?', answer with the return loop: postmortem corrective actions and flaky-test remediation. The blast radiusHow much breaks if a change goes wrong; the scope of potential damage. Press Enter for the full definition. is small, the before/after evidence is clean and you're fixing pain they already feel. Graduate forward into Build and Test as trust compounds.

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Optional practice

Test yourself on The forward stream

QWhich of the following is the strongest reason the return loop is the ideal first workload for an AI coding agent in a cautious enterprise?