When ISVs plan to build applications using cloud computing services, they have two key decisions to make:
What services to build, and what sort of application to build?
One approach is to build a traditional enterprise application, carryout minimal modification and run it on a particular provider’s cloud system infrastructure such as Microsoft Azure or Amazon’s EC2. These are hosted applications running on cloud infrastructure and benefit from hardware virtualization, but are not optimized cloud applications or cloud application services.
A second approach is to create a cloud-optimized application that uses various programming models, architectures and techniques to exploit the dynamic and distributed nature of the cloud environment. Applications designed using SaaS architecture are prime candidates for cloud optimization as such applications are designed to support scalability and performance to serve their entire use base.
The second approach can be built into an application using traditional in-house propriety tools or cloud based development and test tools supported by providers like IBM. Some of the specialized platforms can also be used to build cloud optimized application as these platforms provide controlled environments to mask the complexities of creating cloud applications.
By Sunil Gupta, SVP & Head of Service Lines, Symphony Services