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At QCon London 2026, Form3 engineers shared their experience launching an active-active-active multi-cloud architecture for bank payments. This solution arose from regulator requirements to reduce concentration risks in a single cloud. Today, March 17, 2026, the Form3 story highlights real challenges and benefits of platform engineering in DevOps.
Form3 faced a requirement from the UK banking sector regulator to diversify cloud providers after 2021, when concerns arose about systemic risks of concentration on a single supplier. The company completely overhauled its architecture, migrating from an AWS-specific stack to a cloud-agnostic solution with Kubernetes, NATS JetStream, and CockroachDB. The solution proved its effectiveness during a major Google Cloud outage last summer, when payments continued seamlessly through the other clouds.
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