The document discusses AWS landing zones, which provide standardized account structures, networking designs, security policies, and automation tools to help organizations centrally govern their use of AWS accounts at scale. It describes the key components of a landing zone, including account structure, network design, identity and access management, security and visibility features, shared services, and automation tools. The landing zone approach aims to provide guardrails rather than blockers to help customers deploy and manage multiple AWS accounts in a standardized, scalable, and auditable manner.