Module 10 - The Cloud Journey

Question 1

AWS Well-Architected Framework

Answer 1

• Helps you understand how to design and operate reliable, secure, efficient and cost-effective systems in AWS Cloud.
• Provides way to consistently measure architecture against best practices and design principles and identify areas for improvement.

Question 2

AWS Well-Architected Framework five pillars

OSRPC

Answer 2

Operational excellence
Security
Reliability
Performance efficiency
Cost optimisation

Question 3

Operational excellence

Answer 3

 Ability to run and monitor systems to deliver business value.
 Continually improve supporting processes and procedures.

Question 4

Design principles for operational excellence in cloud include:

Answer 4

• Performing operations as code.
• Annotating documentation.
• Anticipating failure.
• Frequently making small, reversible changes.

Question 5

Security

Answer 5

 Ability to protect information, systems and assets while delivering business value through risk assessments and mitigation strategies.

Question 6

Security best practices

Answer 6

• Automate security best practices when possible.
• Apply security at all layers.
• Protect data in transit and at rest.

Question 7

Reliability

recover. ..
dynamically. ..
mitigate. ..

Answer 7

 Ability of system to:
• Recover from infrastructure or service disruptions.
• Dynamically acquire computing resources to meet demand.
• Mitigate disruptions such as misconfigurations or transient network issues.

Question 8

Reliability best practices

Answer 8

• Testing recovery procedures.
• Scaling horizontally to increase aggregate system availability.
• Automatically recovering from failure.

Question 9

Performance efficiency

Answer 9

 Ability to use computing resources efficiently to meet system requirements.

 Maintain efficiency as demand changes and technologies evolve.

Question 10

Evaluating performance efficiency of architecture includes:

Answer 10

• Experimenting more often.
• Using serverless architectures.
• Designing systems to be able to go global in minutes.

Question 11

Cost optimisation

Answer 11

Ability to run systems to deliver business value at lowest price point

Question 12

Cost optimisation includes

Answer 12

• Adopting consumption model.
• Analysing and attributing expenditure.
• Using managed services to reduce cost of ownership.

Question 13

Advantages of Cloud Computing

Answer 13

Trade upfront expense for variable expense

Benefit from massive economies of scale

Stop guessing capacity

Increase speed and agility

Stop spending money running and maintaining data centre

Go global in minutes

Question 14

Upfront expenses

Answer 14

 Data centres.
 Physical servers.
 Other resources that you would need to invest in before using computing resources.

Question 15

Trade upfront expense for variable expense

Answer 15

Pay only when you consume computing resources

Question 16

Benefit from massive economies of scale

Answer 16

o Can achieve lower variable cost than you can get on your own.

o Usage from hundreds of thousands of customers aggregates in cloud.
 Provides such as AWS achieve higher economies of scale.

o Translate into lower pay-as-you-go prices.

Question 17

Stop guessing capacity

Answer 17

o Don’t have to predict how much infrastructure capacity you will need before deploying application.

o Instead of paying for resources unused or dealing with limited capacity.
 Can access only capacity that you need.
 Scale in/out in response to demand.

Question 18

Increase speed and agility

Answer 18

o Flexibility of cloud computing makes it easier to develop and deploy applications.
 Provides development teams with more time to experiment and innovate.

Question 19

Stop spending money running and maintaining data centre

Answer 19

o Cloud computing in data centres requires to spend more money and time managing infrastructure and servers.

o Benefit of cloud computing – ability to focus less on these tasks and more on your applications and customers.

Question 20

Go global in minutes

Answer 20

o AWS Cloud global footprint enables you to quickly deploy applications to customers around world.

o Providing them with low latency.