- SaaS is a method by which software is made available, on a service-based model, to users over the Internet.
- IaaS offers cloud infrastructure services, for example storage, payments, networking, virtualization, that are used to run other services.
- PaaS provides tools and platforms that are available over the internet.
Cloud-based Services Agreements: Legal Q&A
Cloud services are becoming more important than ever in business. Many organisations across the globe use at least one type of cloud service. This article answers some frequently asked questions in relation to cloud service offerings and some of the key provisions which are most likely to be discussed and negotiated in cloud-based contracts.
What is software as a service?
Software as a service (SaaS) is the delivery of a service by an IT provider that remotely hosts and manages software for its customers. In addition, the software service provider usually offers initial and ongoing support services as part of a SaaS contract. True cloud computing services follow a “one-to-many” model. In essence, there is a standard software product, of which a service provider allows many customers to access the same version. The software is not tailored for specific client requirements, although in practise many SaaS offerings will allow a degree of configuration to suit individual business needs.
What is infrastructure as a service?
Infrastructure as a service (IaaS) is the delivery of computing resources such as servers, central processing unit (CPU), network equipment, memory, disk space and data centre facilities over the internet. IaaS enables an organisation to outsource their hardware or infrastructure to a service provider that hosts the equipment in a secure data centre and access it via the internet. One of the advantages of this model is that it avoids upfront capital expenses for hardware, ongoing maintenance costs and the expense of office space to store the equipment. It also reduces the time the IT staff must spend on fixing problems related to the infrastructure and allows them to focus on more strategic issues for their organisation.
What is platform as a service?
Platform-as-a-service (PaaS) is a type of cloud computing offering via which a service provider allows the customer to host their software application or app on the service provider’s platform in order to distribute them to their clients. This allows the customer to avoid the significant costs of large-scale data centre purchases and provide a channel to clients, thereby reducing the cost to market for new cloud applications. Google App Engine is an example of PaaS.
What is the difference between each of the main categories of cloud services?
In short, the main categories of cloud services can be differentiated as follows:
Authors

Mark Chapman
General Counsel, Head of Commercial & Regulatory
01276 854 928
mark.chapman@hc.law


