Most businesses will evaluate and categorize their applications into “tiers,” that organizations can choose from depending on their business requirements, recovery time objectives (RTO), and budget. Here are some examples of RPO tiers: Tier 1 RPO: Zero data loss — This is the highest level of RPO where organizations cannot tolerate any data loss. It is usually required for critical applications such as financial systems, healthcare, and government services. This level of RPO requires continuous data replication and is typically achieved using synchronous data replication. Tier 2 RPO: Minimal data loss — This RPO tier allows for a minimal amount of data loss, typically measured in minutes. It is suitable for applications that are critical but not as sensitive as Tier 1 applications. This level of RPO is typically achieved using asynchronous data replication. Tier 3 RPO: Limited data loss — This RPO tier allows for a limited amount of data loss, usually measured in hours. It is suitable for applications that are less critical and can tolerate some data loss. This level of RPO is typically achieved using backup and restore solutions. Tier 4 RPO: Extended data loss — This RPO tier allows for an extended amount of data loss, usually measured in days. It is suitable for applications that are not critical and can tolerate a significant amount of data loss. This level of RPO is typically achieved using manual processes and off-site backups.