Data Extension and List in SFMC

 Q1. What is Difference between Data Extension and List ? 
 Q2. Why Most the Marketers they go with Data Extension ? 

-- List : List is a storing data method in SFMC. Collection of subscribers that receive your communications. You can create as many lists as you want to segment your subscribers. 
 
1. Your lists contain 500,000 subscribers or fewer.
2. You prefer simplicity over performance.
3. You don’t require fast import speed.
4. You plan to use a limited number of subscriber attributes. (First Name, Last Name, Email Address, Status.)

Advantages:
1. A List can be configured to send a welcome email when a new subscriber opts in.
2. Lists also give you the option to enable double opt-ins for new subscribers to receive an email containing a link to confirm their email address.  

Disadvantages:
1. If we have data more than 500,000 then we can't use List.
2. If a recipient unsubscribes from any one of your Lists, they are unsubscribed from all your Lists.
3. Lists can only store first name, last name, email address, status, and a subscriber key for each of your subscribers. 
4. List Can not use Publication List.

--Data Extension: DE is a table which is contain row and column for storing data in SFMC.  

1. Your DE contain more than 500,000 subscribers.
2. You support multiple subscriber datasets, with separate definitions.
3. You send global SMS/messages.
4. Give fast import speeds.
5. Use triggered sends for Immediate Contact.
6. We can use the SOAP or REST APIs.
7. Prefer a flexible subscription model. 

Advantages: 

1. Data Extensions are defined as Sendable OR Testable. Sendable can be used for sending emails. Testable can be used for testing emails. A Data Extension can be both, either, or neither.
2. Data Extensions gives you the ability to use Publication Lists to manage both subscribers and unsubscribes.
3. Data can hold more information called relational Data Extensions.