DNS

Domain name resolution — records, TTLs, propagation, and how it affects deploys/cutover.

Why we need this / what value this brings

A misconfigured DNS record or a bad TTL can turn a routine deploy or cutover into extended downtime.

Any domain change, cutover, or provider migration.

Lower TTLs in advance of a planned cutover so the old record expires quickly once you change it.

Empty folder — drop notes, links, and findings here as you research.