Abstraction is the concept of dividing specific functions of a server into their own individual systems. Much like subcontracting janitorial, or security services out for a building owner.
Virtualization
- Compute – Provided by hardware with Hypervisor software installed
- Storage – SAN’s or other storage service store the data and virtual machines
- OS – Operating Systems are installed in Virtual Machine files that can be moved like any other file
- DRaaS – Services such as Disaster Recovery are provided by online services
SDN – Software Defined Networking
- Hardware – Routers, Switches and other networking equipment is “dumb” and receives all configurations from a Management Server
- Management Server – manages all rules, logs, and controls network devices
- Rules – written in Python or other languages the rules can offer fine tuned configurations that can route traffic by individual devices, users, and even based on outside conditions.
Serverless Architecture
- Code – is stored on a basic server and makes calls to other services
- Compute – services are now accessed without dealing with the underlying Operating Systems. You call an “encode” service that encodes your video instead of dealing with a Windows Server with ffmpeg.
- Storage – is simply a bucket offered by AWS or AZURE
- Authentication – even services such as authentication can be made through API calls instead of dealing with Active Directory.
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