Work on the Introduction: What is Serverless? section

[rupakg]

Description

• Add content to the main Introduction section.
• Add content to the Introduction: What is Serverless? section.

Filename: ./source/introduction.md

Page/Section:

• [x] Introduction
• [x] Introduction: What is Serverless?

Details: The content will cover:

• [x] Overview
• [] Misconceptions
• [] Characteristics
• [] Driving Factors/Benefits