iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
A cloud service provider (CSP) is an organization that makes computing capabilities available as services. Under the NIST framework, an offering qualifies as a cloud service when it can provide all five essential cloud characteristics—not merely because its seller calls it “cloud.”
What does a cloud service provider do?
A cloud service provider supplies computing resources—such as applications, platforms, servers, storage, or networks—over a network. NIST defines cloud computing as “a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.” (NIST SP 800-145)
The important distinction is the capability the provider offers and how it is delivered. A hosted or internet-accessible product is not automatically a cloud service under this definition; assess the service against the five characteristics below.
Recommended Free Tools
What makes a service cloud under the NIST definition?
NIST identifies five essential characteristics. They must be available in the capability for it to qualify as a cloud service, although a customer may not use every characteristic in each instance. (NIST SP 500-322)
#1 Best Overall
- On-demand self-service: A consumer can provision computing capabilities automatically when needed, without having to request human assistance from the provider for each provision.
- Broad network access: The capability is available over a network through standard mechanisms that work with different kinds of client devices.
- Resource pooling: The provider pools resources to serve multiple consumers, assigning and reassigning them as demand changes. Consumers generally do not control the exact physical location of the resources.
- Rapid elasticity: Capacity can scale outward or inward with demand. To the consumer, the available capacity may appear effectively unlimited.
- Measured service: Resource use is metered, monitored, controlled, and reported, giving the provider and consumer transparency into consumption.
How are cloud service models different from deployment models?
Service models describe the kind of computing capability provided. Deployment models describe how the cloud environment is organized or made available. They are separate ways to classify a service.
| Classification | Model | What it provides or describes |
|---|---|---|
| Service model | Software as a Service (SaaS) | Use of applications supplied by the provider; the consumer primarily acts as an end user. |
| Service model | Platform as a Service (PaaS) | A platform for developing or deploying applications; the consumer primarily acts as a developer or deployer. |
| Service model | Infrastructure as a Service (IaaS) | IT infrastructure; the consumer primarily manages or operates computing resources. |
| Deployment model | Public | A NIST deployment model. |
| Deployment model | Private | A NIST deployment model. |
| Deployment model | Community | A NIST deployment model. |
| Deployment model | Hybrid | A NIST deployment model, not a fourth service model. |
When comparing offerings, first identify whether the capability is an application, a development or deployment platform, or infrastructure. Then consider its deployment model separately. NIST distinguishes services by the capability provisioned and the consumer role it serves. (NIST SP 800-145; NIST SP 500-322)
How can you tell whether an offering is really a cloud service?
Use the five characteristics as a practical assessment rather than relying on product labels. Check whether the capability can be provisioned on demand, accessed through standard network mechanisms, drawn from pooled resources, scaled with demand, and metered. NIST’s qualification guidance says the characteristics must be available, while recognizing that customer requirements and judgment can affect the assessment. (NIST SP 500-322)
Some evidence is visible to a customer; other evidence may not be. For example, a customer may be unable to confirm how resources are pooled behind the scenes. Ask the provider to explain how that characteristic is supported rather than treating the absence of customer visibility as proof either way.
Rank #3
- Your Personal Streaming Server - Build your own Netflix-style media library and stream 4K movies, shows and photos to any device without monthly fees
- Create Your Own Cloud - Store your entire photo, video and music collection; access from anywhere with fast 282 MB/s transfer speeds
- Creator-Grade Backup Solution - Protect your irreplaceable content with automated backups to cloud services, external drives and remote NAS
- Multi-Layered Data Protection - Combine RAID redundancy, automated backups and snapshot technology to prevent data loss from any cause
- Smart Home Surveillance - Support up to 30 IP cameras with AI detection, instant alerts and secure remote monitoring
Is the NIST definition a certification or legal test?
No. NIST describes its definition as a baseline for broad comparisons and discussion, not a rule prescribing a particular deployment method, service delivery, or business operation. It is a useful standards-based framework for evaluating cloud claims, but it is not by itself a universal certification or a complete legal test. (NIST SP 800-145)
Quick Recap
Best Value
- COMPATIBILITY: Specially designed to mount Ubiquiti UniFi Cloud Gateway models UCG-Ultra and UCG-Max securely in place
- RACK SPECIFICATIONS: Standard 1U height rack mount bracket engineered for 10-inch rack installations, offering efficient space utilization
- MOUNTING SOLUTION: Provides stable and secure placement for your UniFi Cloud Gateway UCG Max or UCG Ultra device in server room or network cabinet setups
- PACKAGE CONTENTS: Includes one (1x) 1U 10-inch rack mount bracket specifically designed for UniFi UCG Ultra & UCG Max Gateway installations
- INSTALLATION: Purpose-built bracket ensures proper device positioning and reliable mounting in standard 10-inch rack environments
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
