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Multi-Cloud DocumentDB Deployment (Kubernetes Operator)

This guide explains how to deploy DocumentDB across multiple cloud providers using the DocumentDB Kubernetes Operator, covering setup, configuration, and management of a multi-cloud DocumentDB cluster on Kubernetes.

Background

- This README describes deploying a distributed database (DocumentDB) across multiple cloud providers (e.g., AWS, GCP, Azure) using a Kubernetes Operator — a piece of software that automates the setup, scaling, and management of complex applications on Kubernetes clusters. - DocumentDB is an open-source document database (compatible with MongoDB) managed by the DocumentDB Foundation. The "Kubernetes Operator" pattern extends Kubernetes' API to handle stateful, distributed services like databases. - "Multi-cloud deployment" means running workloads across more than one cloud provider simultaneously, which is still non-trivial for databases due to networking, latency, and data consistency challenges. - This matters because organizations want to avoid vendor lock-in, improve disaster recovery, and achieve better geographic distribution — but running a database across clouds is operationally difficult. Operators that manage this complexity are relatively new and represent a shift toward infrastructure-as-code for stateful workloads.

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