AWS Cloud Concepts (Domain 1)

What are the key benefits of the AWS Cloud?

Agility, elasticity, global reach, high availability, and reduced costs

What does agility mean in the AWS Cloud?

The ability to quickly adapt to changing requirements

What does speed mean as a benefit of AWS global infrastructure?

The ability to deploy resources quickly

When would you benefit from AWS global reach?

When applications need to serve users across different geographic regions

What is elasticity in the AWS Cloud?

The ability to automatically scale resources up or down as demand changes

What is high availability?

Keeping applications and resources accessible despite failures

What is the difference between elasticity and agility?

Elasticity adjusts resources while agility enables rapid adaptation to changing requirements

What is the AWS Well-Architected Framework?

A framework for building secure, reliable, efficient, and cost-effective cloud workloads

What are the six pillars of the Well-Architected Framework?

Operational excellence, security, reliability, performance efficiency, cost optimization, sustainability

What does the operational excellence pillar focus on?

Running and monitoring systems while continually improving processes

What does the security pillar focus on?

Protecting information, systems, and assets while managing security risks

What does the reliability pillar focus on?

Ensuring workloads perform correctly and recover from failures

What does the performance efficiency pillar focus on?

Using computing resources efficiently as requirements change

What does the cost optimization pillar focus on?

Avoiding unnecessary costs and maximizing value from spending

What does the sustainability pillar focus on?

Minimizing environmental impacts of cloud workloads

What is the difference between reliability and high availability?

Reliability ensures correct operation while availability ensures accessibility when needed

What is the difference between performance efficiency and cost optimization?

Performance efficiency optimizes resources while cost optimization minimizes unnecessary spending

What is the difference between operational excellence and reliability?

Operational excellence improves operations while reliability ensures consistent workload performance

What is the AWS Cloud Adoption Framework (AWS CAF)?

A framework that helps organizations plan and accelerate cloud adoption

What are key benefits of using AWS CAF?

Reduced business risk, improved ESG performance, increased revenue, increased operational efficiency

What is a cloud adoption strategy?

A planned approach for moving an organization and workloads to the cloud

When would you use database replication during migration?

When continuously copying database changes to minimize migration downtime

What is the purpose of AWS migration resources?

To help organizations plan, execute, and accelerate cloud migration

What are fixed costs?

Costs that remain relatively constant regardless of usage

What are variable costs?

Costs that change based on resource usage

What is the difference between fixed and variable costs?

Fixed costs remain constant while variable costs change with usage

What are common on-premises costs?

Hardware, maintenance, facilities, power, cooling, and IT personnel

How does AWS change infrastructure costs?

It shifts many costs from upfront capital expenses to variable usage-based expenses

What is the BYOL licensing model?

Using existing software licenses when permitted by the software license terms

What are included licenses?

Software licenses included in the AWS service price

What is the difference between BYOL and included licenses?

BYOL uses existing licenses while included licenses come with the service

What is rightsizing?

Matching resource capacity to actual workload requirements

When should you use rightsizing?

When resources are overprovisioned or underutilized

What are benefits of automation in the AWS Cloud?

Reduced manual work, fewer errors, faster deployment, and improved efficiency

What are economies of scale?

Lower per-unit costs achieved through large-scale purchasing and operations

How does AWS achieve economies of scale?

AWS spreads infrastructure costs across many customers

What is a major economic benefit of cloud computing?

Reduced upfront infrastructure costs and pay-as-you-go pricing

What is the difference between capital expenditure and operational expenditure?

Capital expenditure buys infrastructure upfront while operational expenditure pays for ongoing usage

Why can AWS reduce infrastructure costs?

Customers share AWS infrastructure costs and pay based on usage