Why cloud over on-premises in AWS - Visual Breakdown

Process Flow - Why cloud over on-premises

Start: Need IT resources

↓

Decision: On-Premises or Cloud?

↓

On-Premises

↓

Buy hardware

↓

Setup & maintain

↓

Fixed capacity

↓

Higher upfront cost

↓

Long setup time

↓

You manage all

↓

End

This flow shows the choice between on-premises and cloud, highlighting differences in setup, cost, scaling, and management.

Execution Sample

AWS

Decision: Choose IT resource type
If On-Premises:
  Buy hardware
  Setup & maintain
  Fixed capacity
Else if Cloud:
  Use provider hardware
  Pay as you go
  Scale easily

This pseudo-code shows the decision steps and actions for choosing on-premises or cloud resources.

Process Table

Step	Decision Point	Action Taken	Resulting State
1	Need IT resources	Evaluate options	Ready to choose
2	Choose On-Premises	Buy hardware	Hardware owned, upfront cost
3	On-Premises setup	Setup & maintain	You manage infrastructure
4	On-Premises capacity	Fixed capacity	Scaling limited, slower
5	End	Use resources	Stable but less flexible
6	Choose Cloud	Use provider hardware	No upfront hardware cost
7	Cloud setup	Fast deployment	Ready quickly
8	Cloud payment	Pay as you go	Costs match usage
9	Cloud scaling	Scale up/down easily	Flexible capacity
10	End	Use resources	Managed by provider, flexible

💡 Decision ends after choosing and setting up either on-premises or cloud resources.

Status Tracker

Variable	Start	After On-Premises	After Cloud
Cost	0	High upfront	Low upfront, pay per use
Setup Time	0	Long	Short
Management	None	You manage	Provider manages
Capacity	0	Fixed	Flexible

Key Moments - 3 Insights

Why does cloud have lower upfront cost compared to on-premises?

Because in the cloud you use provider hardware and pay as you go, so you don't buy expensive hardware upfront (see execution_table steps 2 and 6).

How does scaling differ between on-premises and cloud?

On-premises has fixed capacity because you own hardware, so scaling is slower (step 4). Cloud allows easy scaling up or down since resources are virtual and managed by the provider (step 9).

Who manages the infrastructure in cloud vs on-premises?

In on-premises, you manage all hardware and software (step 3). In cloud, the provider manages infrastructure, reducing your management burden (step 10).

Visual Quiz - 3 Questions

Look at the execution_table, what is the cost state after choosing cloud?

A Low upfront, pay per use

B High upfront cost

C No cost at all

D Fixed monthly fee

💡 Hint

Check variable_tracker row 'Cost' after 'After Cloud' column and execution_table step 6.

At which step does the cloud option allow fast deployment?

A Step 3

B Step 4

C Step 7

D Step 2

💡 Hint

Look at execution_table step 7 under 'Cloud setup'.

If you want to manage your own hardware, which step in the table shows this?

A Step 10

B Step 3

C Step 6

D Step 9

💡 Hint

Refer to execution_table step 3 about management.

Concept Snapshot

Why choose cloud over on-premises?
- Cloud uses provider hardware, no upfront buy
- Pay as you go, costs match usage
- Fast setup and easy scaling
- Provider manages infrastructure
- On-premises requires buying and managing hardware
- Fixed capacity and higher upfront cost

Full Transcript

This visual execution shows the decision process between on-premises and cloud IT resources. Starting with the need for resources, you decide either on-premises or cloud. On-premises means buying hardware, setting it up yourself, fixed capacity, and higher upfront cost. Cloud means using provider hardware, paying as you go, fast deployment, flexible scaling, and provider management. Variables like cost, setup time, management, and capacity change accordingly. Key moments clarify why cloud is cheaper upfront, how scaling differs, and who manages infrastructure. The quiz tests understanding of cost, deployment speed, and management roles.

Practice

1. Why do many businesses choose cloud computing over on-premises servers?

easy

A. Because on-premises servers are always faster

B. Because cloud lets them avoid buying and managing physical servers

C. Because cloud requires more physical space

D. Because on-premises servers are cheaper to maintain

Solution

1. Step 1: Understand cost and management differences

   On-premises servers need buying, setup, and ongoing management which costs time and money.

2. Step 2: Compare with cloud benefits

   Cloud removes the need to buy physical servers and handles management, saving money and effort.

3. Final Answer:

   Because cloud lets them avoid buying and managing physical servers -> Option B

4. Quick Check:

   Cloud saves money and effort [OK]

Hint: Cloud avoids physical server costs and management [OK]

Common Mistakes:

• Thinking on-premises is always cheaper
• Confusing physical space needs
• Assuming cloud is slower

2. Which of the following is a correct reason to prefer cloud over on-premises?

easy

A. Cloud allows easy scaling to match your needs anytime

B. On-premises servers can be accessed from anywhere without internet

C. Cloud needs you to buy more hardware

D. On-premises servers automatically update without manual work

Solution

1. Step 1: Review cloud scaling feature

   Cloud lets you increase or decrease resources quickly as your needs change.

2. Step 2: Check other options for accuracy

   Options A, B, and D are incorrect because cloud does not require buying hardware, on-premises needs internet for remote access, and updates often require manual effort.

3. Final Answer:

   Cloud allows easy scaling to match your needs anytime -> Option A

4. Quick Check:

   Cloud scaling [OK]

Hint: Cloud scales resources easily anytime [OK]

Common Mistakes:

• Thinking cloud needs more hardware
• Believing on-premises is internet-free for remote access
• Assuming on-premises updates are automatic

3. Consider this scenario: A company uses cloud services and suddenly needs more storage. What happens next?

medium

A. They need to wait weeks for hardware delivery

B. They must buy new physical hard drives and install them

C. They can quickly increase storage through the cloud provider's console

D. They have to shut down services to add storage

Solution

1. Step 1: Understand cloud resource flexibility

   Cloud providers allow users to add resources like storage instantly via online tools.

2. Step 2: Contrast with on-premises process

   On-premises requires buying and installing hardware, which takes time and may need downtime.

3. Final Answer:

   They can quickly increase storage through the cloud provider's console -> Option C

4. Quick Check:

   Cloud quick resource increase [OK]

Hint: Cloud storage scales fast via console [OK]

Common Mistakes:

• Confusing cloud with physical hardware buying
• Assuming downtime is needed for cloud scaling
• Thinking cloud scaling takes weeks

4. A company tries to access their on-premises server remotely but fails. What is a likely cause?

medium

A. They need to buy more physical servers

B. Cloud services do not allow remote access

C. On-premises servers always allow remote access by default

D. They forgot to connect the server to the internet

Solution

1. Step 1: Identify remote access requirements

   On-premises servers need proper internet connection and configuration to be accessed remotely.

2. Step 2: Evaluate options for correctness

   They forgot to connect the server to the internet correctly points to missing internet connection; B and C are false statements; A is unrelated to access issues.

3. Final Answer:

   They forgot to connect the server to the internet -> Option D

4. Quick Check:

   Remote access needs internet [OK]

Hint: Remote access needs internet connection [OK]

Common Mistakes:

• Thinking cloud disallows remote access
• Assuming on-premises remote access is automatic
• Confusing hardware purchase with access issues

5. A startup wants to launch a website that might get very popular suddenly. Why is cloud a better choice than on-premises for this?

hard

A. Cloud can automatically scale resources up or down based on traffic

B. On-premises servers handle sudden traffic spikes better

C. Cloud requires buying extra servers in advance

D. On-premises servers are easier to access from anywhere

Solution

1. Step 1: Understand traffic scaling needs

   A sudden increase in website visitors needs quick resource scaling to avoid slowdowns or crashes.

2. Step 2: Compare cloud and on-premises scaling

   Cloud can automatically adjust resources instantly; on-premises needs manual hardware changes which are slow and costly.

3. Step 3: Eliminate incorrect options

   Options B, C, and D are incorrect because on-premises is less flexible, cloud does not require buying extra servers upfront, and cloud access is easier.

4. Final Answer:

   Cloud can automatically scale resources up or down based on traffic -> Option A

5. Quick Check:

   Cloud auto-scaling fits sudden traffic [OK]

Hint: Cloud auto-scales for traffic spikes [OK]

Common Mistakes:

• Believing on-premises handles spikes better
• Thinking cloud needs pre-bought servers
• Confusing access ease between cloud and on-premises