Coding for Cloud 101 - Cloud Computing fundamentals. Cloud has evolved drastically in recent times. Commonly there was an SLA for uptime and scaling reliability scenarios. On top of virtualization, things like IaaS or Infrastructure as a Code were born as well.
Cloud has evolved drastically in recent times. While ago, physical servers were everything, bare-metal machines managed by Datacenter operators, where you as a developer or a sysadmin were responsible for managing your own rented machine. Commonly there was an SLA for uptime and scaling reliability scenarios.
After that, virtualization tech came up.
This technology has the ability to create virtual machines inside physical servers. This process was easy in terms of provisioning, scaling, and resource usage, letting you increase the experience in software delivery time, usage, and efficiency. On top of virtualization, things like IaaS or Infrastructure as a Code were born as well.
This “new” approach lets you handle related-infrastructure things such as networking, data storing, OS provisioning, etc, in an easy way with the help of a Control Panel or APIs. The IaaS is an interface that restricts the access of your physical infrastructure but provides wide and free tools for making things reliable as scalable smoothly.
IaaScan be offered as virtualized as well, where you can manage instances like if were bare-metal in terms of a business service model.
Another level of abstraction also came up as well. The PaaS or Platform as a Service, where instead of infrastructure you get a platform for host and develop your apps. Your PaaS provider directly handles scaling and reliability aspects automatically but can affect your applications if the provider is affected too.
With PaaS, you are provided with tools to develop and deliver your applications. A perfect and most popular PaaS example tool is Salesforce’s Heroku.
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