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Dave Jilk

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Latest Articles from Dave Jilk
Like an automobile, a web application needs occasional maintenance and management over its life cycle. Although it doesn't need oil changes, it will probably need version upgrades. There may not be manufacturer recalls, but sometimes servers fail or hang. An application doesn't need to...
The “cloud” terminology has been around for a while, but it was broadly popularized when Amazon Web Services started offering its S3 storage service and its EC2 compute service. With these services, you could easily store data or run software without owning or managing the physical inf...
Virtual appliances are binary files representing the complete and fully configured state of a server. They are a popular approach to the deployment of application software in virtualized data centers as well as in public or private clouds, because once the “golden master” is created, d...
Last year, my best predictions were based on some sort of specialized knowledge or insight, and the worst came from looking into the macro environment and making guesses. So, this year’s predictions emphasize the former approach, yet hopefully avoid sounding like claims such as "the ma...
In an application deployed directly on IaaS, you know and control everything about the database; in a SaaS application you know little and control nothing. But how does it work in PaaS? Since a PaaS is essentially a container that runs application code, and virtually every applicat...
A leading cloud analyst recently told me that there are exactly two ways to operate software: Software-as-a-Service (SaaS) and on-premises. He said, “Either they run in the cloud and someone else takes full responsibility for the underlying physical infrastructure and system management...
Whether SaaS, IaaS or PaaS, one of the central concepts of all layers of cloud computing is multi-tenancy. If there is no shared resource in a deployment, it’s difficult to justify calling that deployment “cloud.” In most SaaS offerings, the multi-tenancy is manifold – the servers, t...