THE SEVEN-LAYER ETCLOVG TAXONOMY

CHECK YOUR UNDERSTANDING • What do the seven letters in ETCLOVG stand for? ◦ Answer: Execution, Tooling, Context, Lifecycle, Observability, Verification, and Governance. • Which layer decides what text goes into the model's context window at each step? ◦ Answer: The Context layer. • Give two reasons Observability and Governance are kept as separate layers. ◦ Answer: They ask different questions, they are often owned by different teams, and they can conflict, for example over how much detail to log. • An agent gives a wrong answer because a needed document was left out of its reading material. Which layer is the root cause, and which layer shows the symptom? ◦ Answer: The root cause is in the Context layer, and the symptom shows up as a Verification failure when the wrong answer is caught. • In the restaurant picture, what does the Lifecycle layer correspond to? ◦ Answer: The host who seats a party, the manager who watches the clock and budget, and the person who clears the table afterward.