Internet

1. E‐Commerce

1.1. Business to consumer (B2C)

1.2. Businesst to business (B2B)

1.3. Consumert to consumer (C2C)

2. Other Internet Services

2.1. E‐mail

2.2. e‐mail program

2.3. Instant messaging (IM)

2.4. mailing list

2.4.1. Subscribing

2.4.2. Unsubscribing

2.5. chat

2.6. chat room

2.7. VoIP

2.8. newsgroup

2.9. message board

3. The World Wide Web

4. Evolution of the Internet

4.1. Cable Internet service

4.2. DSL

4.3. Fiber to the Premises ( FTTP)

4.4. Fixed wireless

4.5. Cellular Radio Network

4.6. Wi‐Fi

4.7. Satellite Internet Service