High availability (HA) in managed databases ensures systems remain operational even during failures, though its exact definition varies by vendor. Neon approaches HA by separating storage and compute, thereby allowing quick resolution of compute failures through the immediate provisioning of new, stateless compute nodes. Storage, designed with high durability and distributed across multiple Availability Zones, uses a combination of Safekeepers for Write-Ahead Log replication, Pageservers for fast data access, and cloud object storage for long-term data security. This architecture guarantees data safety and operational continuity, with redundancy and fault tolerance built into all plans, including free ones, ensuring that Neon maintains a robust and reliable database service.