Architecting for the Cloud

Question 1

Well Architected Framework

Answer 1

“established best practices from lessons learned with customers”

Question 2

Traditional Computing vs Cloud Computing

Answer 2

o IT assets as provisioned resources

o Global, available, and scalable capacity

o Higher level managed services (machine
learning)

o Built in security (safer on AWS than hosting it internally/managing yourself)

o Architecting for cost (you can design your cost in cloud to be more cost efficient)

o Operations on AWS

Question 3

Scalability

Answer 3

Scale Up = increasing amount of RAm

Scale down = adding multiple virtual machines behind an elastic load balancer

Question 4

Instances of Scalability

Answer 4

• Stateless applications (LAMBDA eg. Think of
  using alexa  completely server less)
• Distribute load to multiple nodes
• Stateless Components
• Stateful Components
• Implement Session Affinity
• Distributed Processing
• Implement Distributed Processing

Question 5

Disposable Resources Instead of Fixed Servers

Answer 5

o Instantiating Compute Resources
- Bootstrapping (not having to configure
resources every time)

  - Golden Images
  - Containers
  - Hybrid (containers + EC2 Instances)

o Infrastructure as Code
- CloudFormation

Question 6

Automation

Answer 6

o Serverless Management & Deployment
(wanting to automate everything)
- Eg. AWS Elastic Beanstalk

o Alarms & Events

Question 7

Removing Single Point of Failure

Answer 7

o Introducing Redundancy
o Detect Failures
o Durable Data Storage
o Automated Multi-Data Centre Resilience
o Fault Isolation and Traditional
Horizontal Scaling
- Horizontal Scaling = changing
the # of nodes in computing
system/adding instances
o Sharding

Question 8

Optimize for Costs

Answer 8

o Right Sizing
o Elasticity
o Variety of Purchasing Options

Question 9

Caching

Answer 9

o Application Caching

o Edge Caching

Question 10

Security

Answer 10

o	Use AWS Features for Defense in 
        Depth
o	Shared Security Responsibility with 
        AWS
            - Both customer and AWS Share 
              Security 
            - AWS secures the cloud, customer 
              secures their applications & 
              resources IN the cloud
o	Reduced Privileged Access
o	Security as Code
o	Real Time Auditing

Question 11

Data Lakes

Answer 11

Architectural approach that allows you to store massive amounts of data in a central location so that its readily available to be categorized, processed, and analyzed by different groups

Question 12

Global AWS Services

Answer 12

IAM, Route 53, CloudFront, SNS, SES

Question 13

What is Global but based regionally

Answer 13

S3 bucketing

Question 14

What AWS Services can be used on-prem

Answer 14

o	Snowball
o	Snowball Edge
o	Storage Gateway
o	Code Deploy
o	OpsWorks
o	IoT greengrass

Question 15

How do computers communicate`

Answer 15

o Linux Computer – communicate via
SSH Port 22

o MSFT Computers – communicate via
remote desktop protocol Port 3389

o HTTP – Port 80

o HTTPS – Port 443