Infrastructure as a Service (IaaS).

基础设施即服务(IaaS)。

The primary concepts of IaaS include

IaaS 的基本概念包括

Elasticity is the first critical facet of IaaS.

弹性是IaaS的首要关键方面。

Nimbus is another IaaS solution focused on scientific computing.

Nimbus是一种以科学计算为中心的IaaS解决方案。

The IaaS divides into two types of usage: public and private.

IaaS分为两种用法：公共的和私有的。

IaaS is the delivery of computer infrastructure as a service.

IaaS是以服务的形式交付计算机基础设施。

This bundle, with or without storage, is usually referred to as IaaS.

这种捆绑在一起的服务通常简称为IaaS，无论是否带有存储能力。

IaaS consists of a combination of hardware and software resources.

IaaS有一个硬件和软件资源组合组成。

Internet-based services such as storage and databases are part of the IaaS.

基于Internet的服务(如存储和数据库)是IaaS的一部分。

These Numbers give at least an estimate of the size of the market for IaaS.

这些数字至少估计了IaaS在市场上的大小比重。

This is exactly the kind of problem that you can easily mitigate using IaaS.

这种问题正是您可以使用 IaaS 轻松缓解的。

IaaS-agnostic - by supporting multiple vendors in a custom transparent way.

IaaS无关性——支持多种IaaS供应商，对客户透明。

Figure 1 provides a very simple look at the structures of the PaaS and IaaS models.

图1十分简单地说明了PaaS和IaaS模型的结构。

IaaS is the leasing of infrastructure (computing resources and storage) as a service.

IaaS就是将基础设施(计算资源和存储)作为服务出租。

In other words, PaaS is IaaS with a custom software stack for the given application.

换句话说，PaaS就是IaaS加上一个用于给定应用的定制软件栈。

You will need to see a threshold policy for the infrastructure from the IaaS provider.

您需要查看来自IaaS供应商的基础架构阈值策略。

The best known IaaS environments are Amazon EC2 (Elastic Compute Cloud) and some others.

最有名的IaaS环境是亚马逊ec2(弹性计算云)等等。

Modern development of cloud qualifes three levels of cloud based solution – SaaS, PaaS, IaaS.

当今云技术解决方案的开发分三个级别——SaaS，PaaS, IaaS.

However the IaaS does not have an application-development environment or any testing services.

然而，IaaS并没有一个应用程序开发环境或者测试服务。

Amazon EC2 is playing a role as the IaaS in these layers and provides users virtualized hosts.

Amazon EC2在这些层中作为IaaS，向用户提供虚拟的主机。

The benefits of IaaS include rapid provisioning, ability to scale and pay only for what you use.

IaaS的优点包括快速供应、扩展能力、只为使用的资源付费。

Infrastructure as a Service (IaaS) is a great concept: you use computing resources; you pay for them.

基础设施即服务(Infrastructure as a Service, IaaS)是一个极好的概念：您使用计算资源并支付费用。

IaaS is the rawest form of computing as a service (outside of access to the physical infrastructure).

IaaS是作为服务的计算的最原始的形式(除了对物理基础设施的访问)。

PaaS or IaaS tends to be a decision of cost, service level, or congruence with your requierments.

PaaS或是IaaS是个费用、服务层或是与需求一致性的决定。

Rackspace says it operates nearly 64,000 servers globally, but notes that only some are used for IaaS.

Rackspace则称他们在全球运行的服务器将近6万4千个，同时指出其中只有一部分用作IaaS服务的。

The IaaS provider controls the infrastructure of traditional computing resources in the cloud environment.

IaaS的供应商控制着云环境中传统计算资源的基础架构。

Most importantly, learn about the two primary facets that make IaaS special: elasticity and virtualization.

最重要的是了解 IaaS 与众不同的两个方面：弹性和虚拟化。

The system is decoupled from the underlying infrastructure and therefore easy to get running within any IaaS layer.

由于系统与底层基础设施间的连接是松耦合的，所以它能轻易地运行在任意IaaS层之上。

PaaS is similar to IaaS but includes operating systems and required services that focus on a particular application.

PaaS类似于IaaS，但是它包括操作系统和围绕特定应用的必需的服务。

IaaS (infrastructure as a service) delivers computer infrastructure, typically a platform virtualization environment.

IaaS(基础设施即服务)构建的是计算机基础设施，通常是指虚拟化平台环境。