Overview
Cold standby offers a cost-effective backup solution with manual activation taking seconds or more, ideal for non-critical systems like internal HR platforms on AWS, while hot standby provides real-time redundancy with microsecond failover for mission-critical applications akin to banking apps using Azure Site Recovery. In the era of DevOps and cloud computing from Google Cloud to AWS, hot standby aligns with high availability demands seen in PostgreSQL replication, but cold standby suits budget-conscious setups reminiscent of traditional PLC systems from Rockwell Automation.