Serverless vs PaaS vs IaaS decision in Azure - Hands-On Comparison

Serverless vs PaaS vs IaaS Decision

📖 Scenario: You are working for a small company that wants to deploy a web application. The company is unsure whether to use Serverless, Platform as a Service (PaaS), or Infrastructure as a Service (IaaS) on Azure. You will help by creating a simple decision helper using Python code that models the choice based on the application's needs.

🎯 Goal: Build a Python script that helps decide between Serverless, PaaS, and IaaS based on application requirements like scalability, control, and maintenance effort.

📋 What You'll Learn

Create a dictionary with application requirements and their values

Add a configuration variable to set a threshold for high scalability need

Write logic to decide the best Azure service type based on requirements

Output the final decision as a string variable

💡 Why This Matters

🌍 Real World

Companies often need to decide which cloud service model fits their application best. This project simulates that decision-making process.

💼 Career

Cloud architects and developers must understand service models and how to choose them based on application needs.

1

Create application requirements dictionary

Create a dictionary called app_requirements with these exact entries: 'scalability': 8, 'control': 3, and 'maintenance_effort': 2.

Azure

# Create the app_requirements dictionary with given values
# Your code here

Need a hint?

Use curly braces to create the dictionary and separate keys and values with colons.

2

Add scalability threshold configuration

Add a variable called high_scalability_threshold and set it to 7.

Azure

app_requirements = {'scalability': 8, 'control': 3, 'maintenance_effort': 2}
# Set the high_scalability_threshold variable
# Your code here

Need a hint?

This variable will help decide if the app needs very high scalability.

3

Write decision logic for service type

Write an if-elif-else block that sets a variable service_choice to 'Serverless' if app_requirements['scalability'] is greater than high_scalability_threshold, to 'PaaS' if app_requirements['control'] is greater than or equal to 5, and to 'IaaS' otherwise.

Azure

app_requirements = {'scalability': 8, 'control': 3, 'maintenance_effort': 2}
high_scalability_threshold = 7
# Add if-elif-else block to set service_choice
# Your code here

Need a hint?

Use comparison operators and indentation carefully for the decision structure.

4

Set final decision output variable

Create a variable called final_decision and set it to the string 'Recommended Azure service: ' concatenated with the service_choice variable.

Azure

app_requirements = {'scalability': 8, 'control': 3, 'maintenance_effort': 2}
high_scalability_threshold = 7
if app_requirements['scalability'] > high_scalability_threshold:
    service_choice = 'Serverless'
elif app_requirements['control'] >= 5:
    service_choice = 'PaaS'
else:
    service_choice = 'IaaS'
# Set final_decision string
# Your code here

Need a hint?

Use string concatenation with the + operator.