Before we understand serverless, its architecture, and implementation, it is important to understand its history and how it evolved.
At the beginning there were physical servers. Although users had complete control over physical servers, there were lots of disadvantages:
- Long gestation period between ordering and actual deployment of the server
- Capital intensive in nature
- Waste of resources
- Lower return on investment
- Difficult to scale out and up
A natural evolution to physical servers was virtualization. Virtualization refers to the creation of virtual machines on top of physical servers and deploying applications within them. Virtual machines provide advantages in terms of the following:
- No need to procure physical hardware
- Comparatively easier to create newer virtual machines
- Complete isolation of environments
- Lower costs compared to physical...