Sunday, October 30, 2011

Agile and the Cloud – Match made in Heaven!

Agile and the Cloud are both pervasive these days.  Agile is a software development method based on an iterative and incremental approaches. Applying an Agile method and mindset can, on the one side, can incrementally build Software as a Services (SaaS) based products and, on the other side, utilize IaaS (Infrastructure as a Service) and PaaS (Platform as a Service) to build the SaaS products and services.

As most software professionals are aware, the action of delivering the increment into the traditional on-premise software product environment is often laborious and time consuming. SaaS conveniently provides shared software products as services, and associated data via the Internet, a model that can be scaled and configured to a company’s or product team’s needs. SaaS changes the software paradigm by providing the software as a service “in the cloud” to people and companies that need that product or service. Companies no longer need local administrators to handle the rigorous and time-consuming effort of establishing on-premise product infrastructure and the installing the software.

When building products for the cloud, a production-ready environment is made available to teams almost instantly. While most products require an on-premise installation, building cloud products reduces the need for the often rigorous and time-consuming effort of installing the new releases of the software product infrastructure prior to the installation. Because Agile utilizes an iterative and incremental approach, SaaS products can be incrementally upgraded when the Sprint Review (aka, demonstration) indicates that the product is ready. The effort on the SaaS provider side is reduced also, because a few installations by experts are much easier to develop and manage than the many installations by customers (and documentation, ramp-up, and problem resolution that are included).

On the Agile side, the challenge is to build an infrastructure that supports Agile and does not impede the progress of the Agile team that must continue to deliver value. A simultaneous goal is to avoid investment in infrastructure that may not be needed in later phases of the project. One suggestion is to utilize the infrastructure envisioning approach, which applies an incremental approach to the continuous establishment of an effective infrastructure. This is where Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) can be useful to Agile teams. The cloud IaaS and PaaS approaches enable consumers to only use and pay for what they need. This is a distinct advantage for incremental development processes like Agile. This "use-what-infrastructure-you-need" approach minimizes technology debt and allows the team to adjust and scale its needs just-in-time.

As Agile methods continuously build SaaS product increments (i.e. functionality), the cloud delivers them as increasing business value to the customer with little effort from the customer. In addition, the cloud (by way of IaaS and PaaS) provides Agile projects with tools and infrastructure just-in time, so that the team always has the tools and infrastructure they need but never wastefully invests in unused equipment. Consequently, they are able to provide continuous value to the customer in the cloud. This mutually beneficial relationship is a “match made in heaven” for project teams utilizing Agile to build software in the cloud and using cloud infrastructure to support Agile projects. 

Have you benefited with the Agile and Cloud relationship?  If so, in what ways?  

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