[Solved] What is the main purpose of using a service layer in a Flask application? — Ans: To separate business logic from route handlers for better organization | Flask

Flask - Ecosystem and Patterns

What is the main purpose of using a service layer in a Flask application?

ATo serve static files like images and CSS

BTo separate business logic from route handlers for better organization

CTo handle database migrations automatically

DTo manage user sessions and cookies

Step-by-Step Solution

Solution:

Step 1: Understand the role of service layer
The service layer is designed to hold business logic separate from Flask routes, making code cleaner and easier to maintain.
Step 2: Compare with other options
Handling migrations, serving static files, and managing sessions are not the service layer's responsibilities.
Final Answer:
To separate business logic from route handlers for better organization -> Option B
Quick Check:
Service layer = separates business logic [OK]

Quick Trick: Service layer = business logic outside routes [OK]

Common Mistakes:

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What is the main purpose of using a service layer in a Flask application?