Monzo's Backup Banking Infrastructure: Monzo Stand-in
2025-02-13
To ensure service continuity, Monzo built a separate backup banking infrastructure called Monzo Stand-in. Running on Google Cloud Platform, it can take over from the primary platform (on AWS) in case of a major incident. Stand-in supports core features like card payments, transfers, and account inquiries. It's completely independent from the primary platform, using different services and codebases to minimize single points of failure. Data synchronization employs an eventually consistent model to reduce costs and enhance availability. Stand-in successfully handled a major platform incident in August 2024, ensuring continued customer service.
Tech
Disaster Recovery