CIO's carry the tremendous responsibility of organizing their enterprise IT strategy to be cost effective, efficient and high quality. One of the most \n\ncritically important components of enterprise IT has been applications. Worldwide, enterprise IT departments deploy and deliver third party \n\napplications to their end users and lines of business, and in many cases, build new custom applications from scratch that satisfy the business needs \n\nof end users that are otherwise unsatisfied by third party packages. Applications are the lingua franca of IT. In fact, a number of practices \n\nhave evolved around the importance of the application, how they are built and how they are delivered. One of the most important is the practice of \n\nenterprise architecture. As the sea-change that is cloud computing washes over the industry, certain aspects of cloud that make their way into the \n\nenterprise as private cloud will move enterprise architecture from fairy-tale to reality. The most important of the cloud form factors for enterprise IT \n\nwill be Platform as a Service (PaaS), deployed internally as a private PaaS. PaaS is a software layer that typically stitches together networked resources including OS instances, database server instances, web server \n\ninstances, and even load balancers into a single, shared logical hosting layer. Essentially, PaaS is best summarized as a data center OS. Application \n\ndevelopers, rather than writing an application and tediously configuring that application to be deployed on some specific infrastructure, simply upload \n\nthe application to the PaaS and seconds to minutes later, have it up and running. A far cry from the 60-90 days it might take to get the infrastructure \n\nto deploy an application in the enterprise IT setting. The PaaS takes on the responsibility of matching the various application components to the \n\ninfrastructure, deploying those components, dynamically configuring them, and even providing tools for scaling and updating the application over \n\ntime -- all the mundane tasks no one wants to do. More advanced PaaS offerings even offer advanced architecture patterns, frameworks, and platform \n\nservices such as caching via APIs that guest applications can use. For the past few years, two seemingly orthogonal trends, private cloud and enterprise architecture, have been on a collision course that would \n\nlead to the next era of enterprise IT. Enterprises have been looking to cloud architecture patterns for "what's next", while the cloud has provided \n\nnew meaning to operating efficiency. Rather than evolving down independent paths, private cloud and enterprise architecture have converged to \n\nprivate PaaS.As described, PaaS offers tremendous value but for reasons related to security, performance, bandwidth and latency, developers within the \n\nenterprise are typically barred from using it for all but the simplest and least sensitive development projects. Enter private PaaS. Private PaaS is the \n\ndeployment of a PaaS software layer on an enterprise's internal infrastructure with the goal of exposing the PaaS service to the developers within an \n\nenterprise's various lines of business. What are the benefits of private PaaS over public PaaS? Well I'm glad you asked. Benefits include:\u2022 Faster Time to Market - Self service utility model allows users to upload compiled code and in a button click, "publish" it, never \n\nneeding to configure an application or server again. Deploy apps in minutes versus weeks or months.\u2022 Increased Agility - Simplifies application deployment, management and scaling, while improving developer productivity through \n\nshared services.\u2022 Reduced Costs - Greatly improved infrastructure utilization, removes human configuration tasks where appropriate, and provides \n\nself-service interfaces.\u2022 Reduced Complexity - Simplifies ongoing application management by abstracting applications away from infrastructure and \n\nenforcing a common, inheritable architecture.\u2022 Streamlined Application Management - Enables users to manage all applications from a central place and never needing to worry \n\nabout being outside the bounds of IT governance.Essentially, the hundreds or thousands of developers and architects get access to an internally (and centrally) offered PaaS, hurdling over the \n\npublic roadblocks and getting full access to PaaS' primary value proposition. While this in its own right is powerful, PaaS truly establishes an \n\nenforceable shared architecture and set of services for all applications deployed to it. Applications all conform to an internal gold-standard, and can \n\ntap into the PaaS' various services such as authentication, caching, or whatever else the PaaS has to offer. As a result, no application is an exception \n\nto the rule, but rather all applications inherit from the same foundation. The by-product is that the enterprise becomes extremely nimble. Utilization \n\ndue to shared infrastructure skyrockets, time to market for both deployment and management is drastically shortened, and developer productivity \n\nincreases. Essentially, PaaS embodies the vision of the enterprise architect and provides an enforceable common layer that is an immensely appealing \n\n(and thereby adoptable) value proposition for the developers within the enterprise. As the intersection for private cloud and enterprise architecture, \n\nPaaS will change the private enterprise IT landscape for years to come.Before co-founding Apprenda, Sinclair Schuller held positions at Morgan Stanley, \n\nEden Communications, and the State University of New York (SUNY). Sinclair holds a dual Bachelor of Science in Computer Science & Mathematics \n\nfrom Rensselaer Polytechnic Institute, where he graduated Summa Cum Laude. Sinclair excels in understanding the economics of SaaS platforms and \n\necosystems, and is a frequent speaker and panelist at industry events.