Docker and Container Technologies
The ability to work with virtualized containers (logically partitioned virtual servers sharing common hardware resources) has transformed the way we develop and provide web services. The availability of free and open source operating systems and software packages has made it possible to launch effectively unlimited software-provisioned instances as test environments for product development or actual production deployments. Docker - for good reason - may be the best known of these virtualized technologies, but it's by no means the only one.
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