What is E-Marketing , E-commerce, E-business

What is E-Marketing , E-commerce, E-business also Differentiate them?

E-Commerce:
When an organization is conducting business transaction (buying and selling) using the electronic networks like websites and email etc, it is involved in e-commerce.

E-Marketing:
In simple words, performing all marketing activities using internet and other information technology tools. Involving internet technology for the making, creating, promoting, distributing and pricing of goods and services that are directed to satisfy the needs and wants of the individuals and capturing value for the organization in return

E-Business:
When an organization performs all it’s business activities (production, marketing, accounting, finance, and human resources management) whether production or non-production related using Information Technology, it is involved in e-business.