SaaS: Software as a service

“Software as a service (SaaS; pronounced /sæs/) is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted. It is sometimes referred to as “on-demand software”. SaaS is typically accessed by users using a thin client via a web browser.”
https://en.wikipedia.org/wiki/Software_as_a_service

Software as a Service (SaaS)
“Gartner defines software as a service (SaaS) as software that is owned, delivered and managed remotely by one or more providers. The provider delivers software based on one set of common code and data definitions that is consumed in a one-to-many model by all contracted customers at anytime on a pay-for-use basis or as a subscription based on use metrics.”
http://www.gartner.com/it-glossary/software-as-a-service-saas/

What is SaaS? 10 Frequently Asked Questions About Software as a Service
“What’s the Difference Between SaaS and Cloud Computing?
It isn’t just semantics. The cloud refers to a set of incredibly complex infrastructure technology. At a fundamental level, it’s a collection of computers, servers, and databases that are connected together in a way that users can lease access to share their combined power. The computing power is scalable so that buyers can dynamically increase, or decrease, the amount of computing power they lease.

The cloud can refer to anything that’s hosted remotely and delivered via the Internet. While all cloud programs are run by underlying software, SaaS refers specifically to business software applications that are delivered via the cloud. Given the widespread growth of cloud accessibility, it’s been easier, faster and less expensive for SaaS developers to roll out applications as compared to traditional on-premise software development. Today, nearly every type of core business function – from human resources to enterprise resource planning – is available via SaaS.”
http://blog.softwareadvice.com/articles/enterprise/saas-faqs-1072811/

SaaS: Software as a Service
“SaaS Characteristics

A good way to understand the SaaS model is by thinking of a bank, which protects the privacy of each customer while providing service that is reliable and secure—on a massive scale. A bank’s customers all use the same financial systems and technology without worrying about anyone accessing their personal information without authorization.

A “bank” meets the key characteristics of the SaaS model:

MULTITENANT ARCHITECTURE
A multitenant architecture, in which all users and applications share a single, common infrastructure and code base that is centrally maintained. Because SaaS vendor clients are all on the same infrastructure and code base, vendors can innovate more quickly and save the valuable development time previously spent on maintaining numerous versions of outdated code.

EASY CUSTOMIZATION
The ability for each user to easily customize applications to fit their business processes without affecting the common infrastructure. Because of the way SaaS is architected, these customizations are unique to each company or user and are always preserved through upgrades. That means SaaS providers can make upgrades more often, with less customer risk and much lower adoption cost.

BETTER ACCESS
Improved access to data from any networked device while making it easier to manage privileges, monitor data use, and ensure everyone sees the same information at the same time.”
https://www.salesforce.com/saas/

What is SaaS?
“No additional hardware costs; the processing power required to run the applications is supplied by the cloud provider.
No initial setup costs; applications are ready to use once the user subscribes.
Pay for what you use; if a piece of software is only needed for a limited period then it is only paid for over that period and subscriptions can usually be halted at any time.
Usage is scalable; if a user decides they need more storage or additional services, for example, then they can access these on demand without needing to install new software or hardware.
Updates are automated; whenever there is an update it is available online to existing customers, often free of charge. No new software will be required as it often is with other types of applications and the updates will usually be deployed automatically by the cloud provider.
Cross device compatibility; SaaS applications can be accessed via any internet enabled device, which makes it ideal for those who use a number of different devices, such as internet enabled phones and tablets, and those who don’t always use the same computer.
Accessible from any location; rather than being restricted to installations on individual computers, an application can be accessed from anywhere with an internet enabled device.
Applications can be customised and whitelabelled; with some software, customisation is available meaning it can be altered to suit the needs and branding of a particular customer.”
http://www.interoute.com/what-saas

 

SaaS Metrics 2.0 – Detailed Definitions
“Unit Economics is a very powerful way to analyze the long term profitability of a SaaS business.
I am often asked for the details of how to compute the various elements, such as CAC and LTV. This post gives the formulae.”
http://www.forentrepreneurs.com/saas-metrics-2-definitions-2/

 

Great Infographic – The State of SaaS Today
http://saasaddict.walkme.com/great-infographic-the-state-of-saas-today/