Internship← Cloud Computing Fundamentals learning pathCloud Computing Fundamentals · Module 4 of 10
Virtualisation and compute
Virtual machines and containers share physical servers.
📖 Key ideas
- A hypervisor runs many virtual machines on one physical server.
- Choose instance size by vCPU, RAM, storage and network.
- Containers share the host OS kernel and start faster than VMs.
- Auto scaling groups add or remove instances based on load.
- Spot or preemptible instances are cheap but can be taken back.
💡 Real-life example: Like a hostel building divided into rooms: one building, many independent residents.
HypervisorSoftware that runs virtual machines
InstanceA virtual server in the cloud
Auto scalingAutomatic change in instance count
Spot instanceCheap capacity that can be reclaimed