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Apache Deltacloud

Apache Deltacloud is an open-source abstraction layer and Application Programming Interface (API) framework for managing multiple heterogeneous cloud infrastructure providers through a unified REST-based interface (cloud infrastructure management).

  • Unified Representational State Transfer (REST) API for interacting with multiple cloud infrastructure providers (cloud infrastructure management).
  • Abstraction of provider-specific details into a common cloud model covering compute, storage, and networking primitives (cloud abstraction).
  • Pluggable driver architecture for integrating different Infrastructure-as-a-Service (IaaS) backends under one API endpoint (extensibility framework).
  • Language-agnostic access to cloud resources via Hypertext Transfer Protocol (HTTP) and standard web formats such as XML and JSON (API integration).
  • Deployment as a standalone service that brokers requests between client applications and diverse cloud providers (cloud brokerage layer).

More About Apache Deltacloud

Apache Deltacloud is a project of The Apache Software Foundation that provides a RESTful API and abstraction layer for interacting with multiple IaaS cloud providers through a single, consistent interface (cloud infrastructure management). The project addresses the problem of provider-specific APIs and models that differ across public and private clouds by exposing a unified representation of common cloud resources such as instances, images, storage volumes, and networking constructs (cloud abstraction).

At the core of Apache Deltacloud is a resource-oriented REST API that uses HTTP operations and standard formats such as XML and JSON for interaction with clients (API integration). The API defines a common cloud model that maps to basic IaaS concepts, including compute instances, machine images, hardware profiles, storage volumes, and network-related data where supported (cloud infrastructure management). Client applications communicate only with the Deltacloud API endpoint, while the project handles communication with underlying providers.

Deltacloud implements a pluggable driver architecture that connects the common API to individual cloud backends (extensibility framework). Each driver encapsulates the provider-specific protocol, authentication mechanism, and resource model, translating between the unified Deltacloud representation and the provider’s native API. This design allows integration of public clouds and, where drivers exist, private or on-premises (on-prem) IaaS environments, without changing client-side code (multi-cloud integration).

Enterprises can deploy Deltacloud as a standalone service that acts as a broker between internal applications, orchestration tools, or management platforms and a variety of IaaS providers (cloud brokerage layer). By standardizing on the Deltacloud API, organizations can design automation, provisioning workflows, or capacity management scripts that remain stable even if underlying providers or accounts change, as long as a suitable driver is available (infrastructure automation support).

From an architectural perspective, Deltacloud operates as a stateless web service that processes authenticated API requests, invokes the appropriate provider driver, and returns normalized responses (service middleware). The project fits into categories such as multi-cloud abstraction, infrastructure lifecycle management, and cloud API mediation, and can serve as a component within broader cloud management or orchestration stacks where a provider-neutral IaaS interface is required (cloud platform integration).