The Spot Instance Strategy for 2026 Workloads

Spot instances cut compute cost by 60-90%. The workload patterns that fit and the safety mechanisms that prevent surprise.

Workloads that fit

Stateless workers. CI runners, batch jobs, ML training.

Stateful workloads with fast restart. Caches that warm in seconds.

Safety mechanisms

Spot capacity diversification: spread across instance types and AZs.

Graceful termination: handle the 2-minute warning. Drain, save state, exit cleanly.

Cost reality

60-70% savings is typical. 90% in low-demand windows.

Plan for full on-demand cost during spot crunches. Spot is variable.