Cloud deployment models (public, private, hybrid) in AWS - Step-by-Step Execution

Process Flow - Cloud deployment models (public, private, hybrid)

Start

↓

Choose Deployment Model

↓

Public Cloud

↓

Use shared resources

↓

Private Cloud

↓

Use dedicated resources

↓

Hybrid Cloud

↓

Combine public + private

This flow shows choosing between public, private, and hybrid cloud deployment models and their resource usage.

Execution Sample

AWS

DeployPublicCloud()
DeployPrivateCloud()
DeployHybridCloud()

This code simulates deploying applications on public, private, and hybrid clouds.

Process Table

Step	Action	Deployment Model	Resources Used	Result
1	Start deployment	N/A	N/A	Ready to choose model
2	Select model	Public Cloud	Shared resources	Deploy on AWS public cloud
3	Deploy app	Public Cloud	Shared resources	App runs on shared AWS servers
4	Select model	Private Cloud	Dedicated resources	Deploy on private AWS VPC
5	Deploy app	Private Cloud	Dedicated resources	App runs on isolated AWS VPC
6	Select model	Hybrid Cloud	Public + Private	Deploy split workloads
7	Deploy app	Hybrid Cloud	Public + Private	App parts run on public and private clouds
8	End	N/A	N/A	Deployment complete

💡 All deployment models executed; deployment process finished.

Status Tracker

Variable	Start	After Step 2	After Step 4	After Step 6	Final
DeploymentModel	None	Public Cloud	Private Cloud	Hybrid Cloud	Hybrid Cloud
ResourcesUsed	None	Shared	Dedicated	Shared + Dedicated	Shared + Dedicated
DeploymentStatus	Not started	Public deployed	Private deployed	Hybrid deployed	Complete

Key Moments - 3 Insights

Why does the public cloud use shared resources?

Public cloud uses shared resources because many users share the same physical servers, as shown in step 3 of the execution_table.

How is private cloud different in resource use?

Private cloud uses dedicated resources, meaning servers are reserved for one user only, as seen in step 5 of the execution_table.

What makes hybrid cloud special?

Hybrid cloud combines both public and private resources, running parts of the app in each environment, as shown in steps 6 and 7.

Visual Quiz - 3 Questions

Look at the execution_table at step 3. What resources does the public cloud use?

A Shared resources

B Dedicated resources

C No resources

D Both shared and dedicated

💡 Hint

Check the 'Resources Used' column at step 3 in execution_table.

At which step does the deployment model switch to private cloud?

A Step 2

B Step 4

C Step 6

D Step 7

💡 Hint

Look at the 'Deployment Model' column in execution_table to find when 'Private Cloud' appears.

If you want to run some app parts on both public and private clouds, which deployment model do you choose?

A Public Cloud

B Private Cloud

C Hybrid Cloud

D None

💡 Hint

Refer to steps 6 and 7 in execution_table where 'Hybrid Cloud' is used.

Concept Snapshot

Cloud Deployment Models:
- Public: Uses shared resources, open to many users.
- Private: Uses dedicated resources, isolated for one user.
- Hybrid: Combines public and private for flexibility.
Choose based on security, cost, and control needs.

Full Transcript

This visual execution shows how cloud deployment models work. First, you pick a model: public, private, or hybrid. Public cloud shares resources among users, private cloud uses dedicated resources for one user, and hybrid cloud mixes both. The execution table traces deploying apps on each model step-by-step, showing resource use and deployment status. Key moments clarify why resources differ and what hybrid means. The quiz tests understanding by asking about resource types and deployment steps. This helps beginners see how cloud deployment choices affect where and how apps run.

Practice

1. Which cloud deployment model provides resources shared among many users and is managed by providers like AWS?

easy

A. Community cloud

B. Private cloud

C. Hybrid cloud

D. Public cloud

Solution

1. Step 1: Understand public cloud characteristics

   Public cloud offers shared resources managed by third-party providers like AWS.

2. Step 2: Compare with other models

   Private cloud is dedicated, hybrid combines both, community cloud is shared by organizations with common concerns.

3. Final Answer:

   Public cloud -> Option D

4. Quick Check:

   Shared resources managed by providers = Public cloud [OK]

Hint: Public cloud means shared and managed by providers like AWS [OK]

Common Mistakes:

• Confusing private cloud with public cloud
• Thinking hybrid cloud is fully public
• Mixing community cloud with public cloud

2. Which of the following is the correct description of a private cloud?

easy

A. Cloud resources dedicated to a single organization

B. Cloud resources shared publicly with many users

C. Cloud resources managed by multiple providers

D. Cloud resources only for government use

Solution

1. Step 1: Define private cloud

   Private cloud means resources are dedicated to one organization for better security and control.

2. Step 2: Eliminate incorrect options

   Public sharing is not private, multiple providers relate to hybrid or public, government-only is not a standard model.

3. Final Answer:

   Cloud resources dedicated to a single organization -> Option A

4. Quick Check:

   Dedicated resources = Private cloud [OK]

Hint: Private cloud means dedicated to one organization only [OK]

Common Mistakes:

• Choosing public cloud for private cloud question
• Confusing government-only cloud with private cloud
• Thinking private cloud is shared

3. A company uses a cloud setup where sensitive data is stored on their own servers, but they use AWS public cloud for running web applications. What type of cloud deployment model is this?

medium

A. Hybrid cloud

B. Private cloud

C. Community cloud

D. Public cloud

Solution

1. Step 1: Identify private and public parts

   Sensitive data on own servers means private cloud; web apps on AWS means public cloud.

2. Step 2: Recognize combined model

   Using both private and public clouds together is called hybrid cloud.

3. Final Answer:

   Hybrid cloud -> Option A

4. Quick Check:

   Combination of private and public = Hybrid cloud [OK]

Hint: Mix of private and public cloud is hybrid cloud [OK]

Common Mistakes:

• Choosing only public or private cloud
• Confusing community cloud with hybrid
• Ignoring the mixed usage

4. A company wants to fix an error in their cloud deployment where their private cloud resources are accidentally exposed to the public internet. What is the best immediate action?

medium

A. Switch to a public cloud provider

B. Move all data to a hybrid cloud

C. Review and update firewall and access controls

D. Delete all cloud resources

Solution

1. Step 1: Identify the security issue

   Private cloud resources exposed means access controls or firewall rules are misconfigured.

2. Step 2: Apply correct fix

   Updating firewall and access controls will restrict unwanted public access immediately.

3. Final Answer:

   Review and update firewall and access controls -> Option C

4. Quick Check:

   Fix exposure by access control update [OK]

Hint: Fix exposure by updating firewall and access controls [OK]

Common Mistakes:

• Switching cloud models without fixing security
• Deleting resources unnecessarily
• Moving data without fixing access rules

5. A startup wants to minimize costs but keep sensitive customer data secure. They plan to use AWS public cloud for most services but keep the database on their own servers. Which cloud deployment model fits best and why?

hard

A. Private cloud, because all data stays on own servers

B. Hybrid cloud, because it balances cost and security

C. Public cloud, because it is cheapest and easiest

D. Community cloud, because it shares resources with similar startups

Solution

1. Step 1: Analyze cost and security needs

   Startup wants low cost (public cloud) and secure data (private servers).

2. Step 2: Match deployment model

   Hybrid cloud combines public cloud cost benefits with private cloud security for sensitive data.

3. Final Answer:

   Hybrid cloud, because it balances cost and security -> Option B

4. Quick Check:

   Cost + security balance = Hybrid cloud [OK]

Hint: Hybrid cloud balances cost and security needs [OK]

Common Mistakes:

• Choosing only public cloud ignoring security
• Choosing private cloud ignoring cost
• Confusing community cloud with hybrid