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Transcript of WOLF Whitepaper - The Role of Platform-as-a-Service
Whitepaper
The Role of Platform-as-a-Service
Moving from buzzword to mainstream
WOLF Frameworks
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The Role of Platform -as-a-Service
Contents
Abstract ......................................................................................................................................................................3
Traditional model .......................................................................................................................................................3
The New Model ..........................................................................................................................................................3
What is SaaS, PaaS, and IaaS…..the cloud computing lingo? .....................................................................................3
Welcome to PaaS ........................................................................................................................................................4
Types of PaaS ..............................................................................................................................................................4
Key Characteristics of PaaS .........................................................................................................................................5
Advantages of PaaS ....................................................................................................................................................5
What Makes PaaS Different? ......................................................................................................................................6
Monetization of PaaS .................................................................................................................................................6
PaaS Service Levels .....................................................................................................................................................7
Why WOLF Platform-as-a-Service (PaaS)? .................................................................................................................7
References ..................................................................................................................................................................8
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The Role of Platform -as-a-Service
Abstract
Platform-as-a-Service is an increasingly popular paradigm
moving from just being a buzzword to the mainstream. A
number of Startups, ISVs and Enterprises are now going
directly to the cloud, bypassing traditional web hosting
solutions, avoiding the need to own a server in-house, and
shifting from the traditional model of software
development to the new model offered by PaaS. This
whitepaper talks about the shift from the traditional
software development model to the new model offered by
Platform-as-a-Service. It proceeds to discuss the various
types of PaaS, key characteristics, advantages,
monetization models to the service levels offered by PaaS
providers.
Traditional model
The traditional model of building and running on-premise
applications has always been complex, expensive and risky.
To deploy or use software we first needed the hardware
which included servers from hardware vendors like Dell,
HP, IBM or Sun. If we are intending to build a web
application, we also required data center equipments like
firewalls, switches, routers, VPNs etc for performance and
security. Then it was bandwidth and hosting services.
Once the hardware is in place; we required to purchase and
install operating system, and subsequently an application
server stack, such as Tomcat for Java, LAMP for PHP or Perl.
Next we needed some database like MySQL or Microsoft
SQL Server.
Once the stack was assembled, a team of developers had to
navigate complex programming models like J2EE and .NET.
A team of network, database, and system management
experts was needed to keep everything up and running.
Inevitably, a business requirement would require a change
to the application, which would then kick off a lengthy
development, test, and redeployment cycle.
Large companies often needed specialized facilities to
house their data centers. Enormous amounts of electricity
also were needed to power the servers as well as the
systems to keep them cool. Finally, a failover site was
needed to mirror the data center so information could be
replicated in case of a disaster.
The New Model
Just as Amazon.com, eBay, Google, iTunes, and YouTube
made it possible to access new capabilities and new
markets through a Web browser, PaaS offers a faster, more
cost-effective model for application development and
delivery.
PaaS provides the entire infrastructure needed to run
applications over the Internet. It is delivered in the same
way as a utility like electricity or water. Users simply “tap
in” and take what they need without worrying about the
complexity behind the scenes. And like a utility, PaaS is
based on a metering or subscription model so users only
pay for what they use.
With PaaS, ISVs and corporate IT departments can focus on
innovation instead of complex infrastructure. By leveraging
the PaaS, organizations can redirect a significant portion of
their budgets from “keeping the lights on” to creating
applications that provide real business value.
This model is driving a new era of mass innovation. For the
first time, developers around the world can access
unlimited computing power. Now, anyone with an Internet
connection can build powerful applications and easily
deploy them to users wherever they’re located.
What is SaaS, PaaS, and IaaS…..the cloud
computing lingo?
Figure 1: Cloud Computing Stack
SaaS, PaaS and IaaS are various segments of cloud
computing.
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Software as a Service (SaaS) is the service based on the
concept of renting software from a service provider rather
than buying it yourself. The software is hosted on
centralized network servers to make functionality available
over the web or intranet. Also known as “software on
demand” it is currently the most popular type of cloud
computing because of its high flexibility, great services,
enhanced scalability and less maintenance. Yahoo mail,
Google docs, CRM applications are all instances of SaaS.
The service provider hosts both the application and the
data so the end user is free to use the service from
anywhere. With SaaS user need not worry about
installation or upgrades.
Platform-as-a-Service (PaaS) provides an independent
platform or middleware on which developers can build and
deploy customer application. Common solutions provided
in this tier range from APIs and tools to database and
business process management system, to security
integration, allowing developers to build applications and
run them on the infrastructure that cloud vendors own and
maintains.
The final segment in the cloud computing is the
infrastructure. Infrastructure as a Service (IaaS) is delivery
of the computing infrastructure as a fully outsourced
service operated in a pay-as-you-go model. Some of the
companies that provide infrastructure services are Google,
IBM, and Amazon etc. Managed hosting and development
environments are the services included in IaaS. The user
can buy the infrastructure according to the requirements at
any particular point of time instead of buying the
infrastructure that might not be used for months.
Virtualization enables IaaS providers to offer almost
unlimited instances of servers to customers and make cost-
effective use of the hosting hardware. IaaS users enjoy
access to enterprise grade IT Infrastructure and resources
that might be very costly if purchased completely. Thus
dynamic scaling, usage based pricing, reduced costs and
access to superior IT resources are some of the benefits of
IaaS. IaaS is also sometimes referred to as Hardware as a
Service (HaaS). An Infrastructure as a Service offering also
provides maximum flexibility because just about anything
that can be virtualized can be run on these platforms. This
is perhaps the biggest benefit of an IaaS environment. For a
startup or small business, one of the most difficult things to
do is keep capital expenditures under control. By moving
your infrastructure to the cloud, you have the ability to
scale as if you owned your own hardware and data center.
Welcome to PaaS
What makes PaaS unique? With so much buzz around
Cloud Computing Services including Infrastructure-as-a-
Service (IaaS), Platform-as-a-Service (PaaS) and Software-
as-a-Service (SaaS), why PaaS stands out of this mix? Is
PaaS simply a way of getting code up and running without
having to requisition a server or there is more to it? In the
words of Wikipedia, ‘Platform as a service (PaaS) is the
delivery of a computing platform and solution stack as a
service’. PaaS makes all of the facilities required to support
the end-to-end life cycle of building and delivering web
applications and services entirely available from the
Internet with no software downloads or installation for
developers or end-users.
Types of PaaS
Figure 2: Types of PaaS
Social Application Platforms – Social Application Platforms
are used to develop applications on social networks.
Platforms like Facebook, Orkut, Yahoo, and MySpace
provide APIs for third parties to write new application
functionality that is made available to all users.
Computation Platforms – Computation Platforms are sort
of hardware architecture and software framework
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(including application frameworks) that allows software to
run. Amazon Web services and Microsoft Azure provide
storage, processor, and bandwidth as a service. Developers
can upload their traditional software stack and run their
applications on these infrastructures.
Web Application Platforms – Web Application Platforms
like Google provide APIs and functionality for developers to
build Web applications that leverage its mapping, calendar,
and spreadsheets plus YouTube and other services.
Business Application Platforms – Business Application
Platforms provide application infrastructure specifically for
transactional business applications such as database,
integration, workflow, and user interface services. For
companies unwilling to compromise on scalability,
reliability, and security, WOLF is a clear choice for a flexible
platform that manages critical business processes and is a
rapid online application development platform. Business
Application platforms can also be used to build situational
applications. Situational Applications do not replace core
business applications. They address a different need —
applications that are built for just a handful of users,
applications that are used for only a few weeks or months,
or applications that address a small piece of functionality.
Situational applications are a potent combination of tools,
mindset and methodology. They provide a formidable force
that helps your organization meet today’s business
challenges quickly and cost-effectively.
Key Characteristics of PaaS
1. Simplified and reduced infrastructure - Build web
applications using a browser and an internet
connection.
2. Work across boundaries - Collaboration of
geographically distributed teams in development
and maintenance of a software.
3. PaaS keeps the focus on the design - PaaS takes care
of configuring and maintaining the interoperability
of individual components of the web application,
enabling the focus to be on the design of the
software.
4. Removes the overhead of buying/installing
additional software - PaaS works on an On-Demand
Model. It further eliminates the overhead of
investing in expensive software licenses with its
subscription model based on a pay-as-you-use basis.
5. Eliminates the overhead of buying, configuring and
maintaining hardware such as database, middleware
and server, which interact with each other as well as
with the software, as these are all taken care of by
the PaaS provider.
6. Instant deployment of your web application.
7. Inherent security provided by the PaaS provider. In
addition to this, many PaaS providers give the option
of enabling additional security features at a price.
8. Multi tenant Architecture
9. Faster ROI
10. Scalability
11. Integration with a host of software systems
12. Simultaneous upgrades or enchantments for SaaS
applications or the PaaS system by the PaaS
provider.
Advantages of PaaS
Following are the some advantages of PaaS as a Customer
point of view:
1. Low cost and lower total cost of ownership (TCO):
Generally when customer wants to have a software
business solution (IT enabled business solution),
there are many factors for which cost have to be
considered. The various types of costs involved are
datacenter costs, setup costs, licensing costs,
training costs, maintenance costs and support costs.
When a customer uses PaaS as a business solution,
then they don’t have to worry about this entire
infrastructure and ultimately there is reduction in
cost.
2. Zero Infrastructure - Reduced Overheads: Customer
not has to consider setup and maintenance so there
is less overhead associated with PaaS model.
3. On demand service: Customer can use a platform of
their choice and requirement on a subscription basis
and when there is no need for it they can
discontinue the same.
4. Lower risk - faster implementations and outsourced
expertise dramatically lower risk
5. A more powerful and secure IT infrastructure
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6. Cost-effective Infinite Scalability: Customer can Scale
the no of user licenses as per their requirements.
7. Easy to implement: As there is no infrastructure
setup associated with PaaS, it is easy to implement
8. Freedom of Choice: As there are many PaaS
providers, customer can select according to their
choice and requirement.
9. Centralized feature updating, which obviates the
need for downloadable patches and upgrades
10. Per license cost has to give
Platform as a Service (PaaS) help business users to
minimize operational costs and increase their productivity.
Some of the advantages to business users are:
1. Time to Market
2. Requires no up-front investments
3. Minimize operational costs
4. Centralized information management
5. Enhanced productivity
6. Access to information anywhere, anytime
7. Easy collaboration
8. Secured and customized access
Platform as a Service (PaaS) enables developers to focus
only on innovation that provide real business value instead
of infrastructure set-up. Some of the advantages are:
1. Zero Infrastructure
2. Lower Risk
3. Lower cost and improved profitability
4. Easy and quick development
5. Monetize quickly
6. Reusable code and business logics
7. Integration with other web services
What Makes PaaS Different?
The alternative to PaaS is to develop web applications using
desktop development tools like Eclipse or Microsoft Access,
and then manually deploy those applications to a cloud
hosting provider such as Amazon EC2.
PaaS platforms also have functional differences from
traditional development platforms. These include:
1. Multi-tenant development tool: traditional
development tools are single user – PaaS supports
multiple users, each with multiple roles.
2. Multi-tenant deployment architecture: scalability is
often not a concern of the initial development effort
and is left instead for the system administrators to
deal with when the project deploys. In PaaS,
scalability of the application and data tiers must be
built-in (e.g., load balancing, failover need to be
basic elements of the dev platform itself).
3. Integrated management: traditional development
solution usually does not concern them with runtime
monitoring, but in PaaS, the monitoring ability needs
to be baked into the development platform.
4. Integrated billing: PaaS offerings require
mechanisms for billing based on usage that are
unique to the SaaS world.
Monetization of PaaS
The traditional licensing model of the on-premise platform or software is not the best idea for On-demand Platform. A subscription pricing model is the most suitable solution to PaaS monetization. Many PaaS providers face the problem of fixing the right price for its platform/services. There are many alternatives and factors that should be considered when dealing with this.
Figure 3: Payment models of PaaS
Some of the pricing alternatives for Platform-as-a-Service are:
Pay Periodically
Pay per User
Pay for Resources
Pay per Features
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The Role of Platform -as-a-Service
1. Pay Periodically: This means charging the customer
on regular basis as a monthly subscription fees.
2. Pay for each user: Charge the customer on the basis
of the number of users for the platform.
3. Pay for the resources: This means charging the
customer for computing resources such as data
storage.
4. Pay for the features: The customer pays just for the
features in the platform they really need. This can be
based on the number of applications a customer can
build on the platform.
PaaS Service Levels
Figure 4: Cloud Service Levels
The above diagram shows the service levels associated with the various segments of cloud computing. In a Platform-as-a-Service model it is the just the application that you need to manage, the rest is taken care of by the PaaS vendor. The PaaS manages the runtimes, security & integration, database, servers, virtualization, server HW, storage and networking making it much simpler for you and allows focusing on your business and the application you use.
Why WOLF Platform-as-a-Service (PaaS)?
1. Reduced time-to-market and faster ROI
o Reduce the time & cost for developing custom
web-based software by more than 70% as
compared to any standard software
development cycle.
o Clicks instead of code – design all the way!
o Business Rules engine to define custom
workflow
o Ready chart and report templates
2. Customized SaaS solutions for every customer
o WOLF’s unique technical architecture allows
customers to develop and enhance custom
features and processes within days with minimal
investments.
o You have freedom to white label your solutions
– custom branding, personalized URL and
custom UI. Easily embed WOLF functional
widgets in your website, portal or blog.
3. Intuitive Business Rules Engine
o Ready-to-use Business Rule Actions to fire &
map complex business processes. Draw complex
analysis from data and represent it in the form
of reports, graphical charts and dashboard items
within minutes.
4. Interoperable & Mashable SaaS Applications
o Ready actions to interact with on-premise or
other Cloud based software systems. No need
to deal with APIs– use configurable business
rules.
5. Secure
o Built-in User/Role Management module,
supports highly secured 128-bit encryption
enabled URL, SSO authentication & AD
integration.
6. The End of IT Maintenance
o Focus on your business application
functionality/core competency while WOLF
maintains and upgrades the underlying
technology & infrastructure and manages your
business solution.
7. Flexible Deployment Options
o Hybrid & flexible deployment models. Host the
application in your preferred server: Private
Cloud or just run it from the WOLF On Demand
Public Cloud or a third party hosting provider
8. Reduced Vendor Lock-in
o Own the Business IP via paper license, extract &
save data in your private database & also extract
application design in a portable XML format
with a single click.
9. Cost Effective, Scalable and pay as you earn
o Monthly subscription fee on per user / per
month basis ranging from USD $ 7 to $ 10.
o Scale your application cost-effectively with your
business.
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10. Leverage the WOLF Partner Ecosystem
o The Partner Model is targeted to drive idea
partners, SI’s, ISV’s, and Consulting firms to
rapidly commoditize and commercialize their
business processes and offer them as Software-
as-a-Services within days. WOLF also has
specialized channel partners delivering these
SaaS applications to customers across regions.
References
[1] http://en.wikipedia.org/wiki/Platform_as_a_service
[2] http://en.wikipedia.org/wiki/Cloud_computing
[3] http://www.wolfframeworks.com/
[4] http://www.keeneview.com/2009/03/what-is-platform-as-service-paas.html
[5] http://crmhelpdesksoftware.com/what-is-saas-paas-iaas-understanding-cloud-computing-lingo/
[6] http://cloud-computing.learningtree.com/2010/08/25/comparing-paas-and-iaas/
[7] http://www.slideshare.net/AspireSystems/going-ondemand-iaas-paas-or-solution-accelerators
[8] http://www.slideshare.net/jcleblanc/foundations-of-a-social-platform
[9] http://www.zdnet.com/blog/saas/a-plethora-of-paas-options/472
[10] http://eprints.ecs.soton.ac.uk/21078/1/2010_-_21078.pdf
[11] http://vlele.wordpress.com/2010/12/07/platform-as-a-service-when-it-comes-to-the-cloud-paas-is-the-point-2/
[12] http://devcentral.f5.com/weblogs/macvittie/archive/2010/02/11/return-of-the-web-application-platform-
wars.aspx
[13] http://www.asp-toolkit.com/tag/pricing-models
[14] http://cioresearchcenter.com/2010/12/107/
[15] http://itknowledgeexchange.techtarget.com/bookworm/building-information-systems-at-the-edge-of-chaos/
[16] Jonathan Sapir, “Power in the Cloud”, Using Cloud Computing to Build Information Systems at the Edge of Chaos,
2009
[17] http://www.cloudcomputinglive.com/mea/paas.html
[18] http://cloudpulseblog.com/2010/02/the-essential-characteristics-of-paas
For More Information For more information about WOLF products and services, call the WOLF Sales Information Center at +91 98865 46085. To access information using the World Wide Web, go to: http://www.wolfframeworks.com
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