Azure Fundamentals · Lesson

Defining RTO, RPO, and Recovery Tiers

Classify workloads by criticality, assign RTO and RPO targets, and map them to appropriate Azure recovery capabilities and replication frequencies.

Business Continuity Planning Fundamentals

Business continuity planning (BCP) is the process of ensuring that critical business functions can continue during and after a disaster. In cloud computing, this translates to designing systems that can recover from failures within acceptable time and data loss thresholds. Two key metrics — RTO and RPO — define what 'acceptable' means for each workload.

Recovery Time Objective (RTO)

Recovery Time Objective (RTO) is the maximum acceptable length of time that a system can be offline after a disaster. It answers the question: 'How long can the business tolerate this application being down?'. RTO is expressed in time — hours, minutes, or seconds. A payment processing system might have an RTO of 15 minutes, while an internal HR portal might have an RTO of 24 hours.

# RTO examples by workload type:
# Payment processing: RTO = 15 minutes
# E-commerce storefront: RTO = 1 hour
# Internal reporting: RTO = 4 hours
# Archive/audit data: RTO = 24 hours

# Shorter RTO = more expensive architecture required
# (warm standby, active-active, auto-failover)

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