What it does
IBM Cloudant is IBM's managed document database service on IBM Cloud. It stores flexible, schema-free JSON documents and is based on Apache CouchDB, with a compatible API and replication protocol. IBM operates the service; applications connect through an HTTPS API, dashboard, or SDKs. The service supports database replication, multiple query approaches, and separately configurable throughput capacity and storage.
IBM's getting-started guide walks through provisioning a Cloudant instance in the IBM Cloud dashboard and creating service credentials. The service documentation describes an HTTPS API and language SDKs for application access, so a sensible first task is to provision an instance, create a database for a small JSON dataset, and connect through the documented API or SDK rather than treating the dashboard as the application's query layer. These steps describe the published workflow; no account or live database was created for this listing.
The free Lite plan is intended for evaluation and testing, with fixed throughput and a 1 GB storage limit. IBM's plan documentation says writes are blocked when Lite storage exceeds that limit. Standard offers scalable provisioned throughput and includes 20 GB of storage; charges vary with selected capacity and additional storage, and IBM lists separate Gen 2 offerings. The catalog presents starting prices rather than a workload-specific estimate, so actual cost depends on configuration. IBM also states that Cloudant data is not automatically backed up; teams should plan and verify their own recovery approach.
Cloudant is a managed service, not the self-managed Apache CouchDB engine. The service's CouchDB lineage and compatible interfaces do not make it the same product or mean that a user's data is backed up automatically.
Strengths
- IBM documents an instance-and-credentials setup path, with SDK and HTTPS API access for applications.
- The service combines JSON document storage with replication and several query approaches.
- The Lite plan offers an evaluation tier, while paid capacity can be adjusted for larger workloads.
Watch out for
- The free Lite plan has fixed capacity and a 1 GB storage limit; IBM documents that writes are blocked after the limit is exceeded.
- Paid charges depend on provisioned throughput and storage, so a catalog starting price is not a workload-specific estimate.
- IBM states that Cloudant data is not automatically backed up; customers need to plan and verify backup and recovery.
Best for
- Application developers who need a managed JSON document database accessible through HTTP or language SDKs.
- Teams that want a hosted document store with adjustable throughput and database replication options.
Sources
- IBM Cloudant (Oct 25, 2026)
- What is IBM Cloudant? | IBM Cloud Docs (Oct 25, 2026)
- Plans and provisioning | IBM Cloud Docs (Oct 25, 2026)
- Cloudant - IBM Cloud (Oct 25, 2026)
- Usage and charges | IBM Cloud Docs (Oct 25, 2026)
- Getting started | IBM Cloud Docs (Oct 25, 2026)