As described, PaaS offers tremendous value but for reasons related to security, performance, bandwidth and latency, developers within the enterprise are typically barred from using it for all but the simplest and least sensitive development projects. Enter private PaaS. Private PaaS is the deployment of a PaaS software layer on an enterprise's internal infrastructure with the goal of exposing the PaaS service to the developers within an enterprise's various lines of business.
What are the benefits of private PaaS over public PaaS? Well I'm glad you asked. Benefits include:
• Faster Time to Market - Self service utility model allows users to upload compiled code and in a button click, "publish" it, never needing to configure an application or server again. Deploy apps in minutes versus weeks or months.
• Increased Agility - Simplifies application deployment, management and scaling, while improving developer productivity through shared services.
• Reduced Costs - Greatly improved infrastructure utilization, removes human configuration tasks where appropriate, and provides self-service interfaces.
• Reduced Complexity - Simplifies ongoing application management by abstracting applications away from infrastructure and enforcing a common, inheritable architecture.
• Streamlined Application Management - Enables users to manage all applications from a central place and never needing to worry about 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 public roadblocks and getting full access to PaaS' primary value proposition. While this in its own right is powerful, PaaS truly establishes an enforceable shared architecture and set of services for all applications deployed to it. Applications all conform to an internal gold-standard, and can tap 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 to the rule, but rather all applications inherit from the same foundation. The by-product is that the enterprise becomes extremely nimble. Utilization due to shared infrastructure skyrockets, time to market for both deployment and management is drastically shortened, and developer productivity increases. Essentially, PaaS embodies the vision of the enterprise architect and provides an enforceable common layer that is an immensely appealing (and thereby adoptable) value proposition for the developers within the enterprise. As the intersection for private cloud and enterprise architecture, PaaS will change the private enterprise IT landscape for years to come.