Week 1 Flashcards
When did Amazon launch Amazon Web Services?
2002
Who are some of the leaders in Cloud Infrastructure and Platform Services (CIPS)
- Amazon, 2. Microsoft, 3. Google (Amazon is the leader with 41% market share)
What are the six benefits (at a glance) to AWS
Easy to use, flexible, cost-effective, reliable, scalable and high-performance, secure
List 6 different components of servers:
CPU (computes), Memory (RAM), Storage (data), Network routers, switches, DNS Servers
What is the problem with traditional “on-premise” data centers? (7)
- Pay (buy, lease, rent) to use for the data center space
- Pay for the data center utilities (power, heating, cooling, etc.)
- Pay (buy, lease, rent) for hardware (servers, racks, routers, switches, network, etc.)
- Pay for resources (employee, contractors) to secure, support, monitor, maintain the data center
- Pay for scale (changes in demand)
- Pay for reliability (hardware and software failures)
- Pay for availability (earthquake, power shutdown, fire, etc.)
What is cloud computing?
The on-demand delivery of IT resources over the internet with pay-as-you-go pricing
- You can access technology services such as computing power, storage, and databases on an as-needed basis instead of buying, owning, and maintaining physical data centers
- Provides rapid access to flexible and low cost IT resources that would otherwise be costly
- Allows you to provision the exact type and size of computing resources needed for your IT dept or new idea
- Cloud computing provides a simple way to access servers, storage, databases and a broad set of application services over the Internet. A cloud services platform such as Amazon Web Services owns and maintains the network-connected hardware required for these application services, while you provision and use what you need via a web application.
List some big companies currently using AWS
McDonalds(home delivery business), Formula One (AWS Machine Learning), 21st Century Fox, Netflix
What are the 5 main characteristics of cloud computing
On-demand self service
• Users can provision resources and use them without human interaction from the service provider
Broad network access
• Resources available over the network, and can be accessed by diverse client platforms
Multi-tenancy and resource pooling
• Multiple customers can share the same infrastructure and applications with security and privacy
• Multiple customers are serviced from the same physical resources
Rapid elasticity and scalability
• Automatically and quickly acquire and dispose resources when needed
• Quickly and easily scale based on demand
Measured service
• Usage is measured, users pay correctly for what they have used
What are the six main advantages of cloud computing?
-Trade capital expense (CAPEX) for variable expense (OPEX)
Instead of having to invest heavily in data centers and servers before you know how you’re going to use them, you can pay only when you consume computing resources, and pay only for
how much you consume.
-Benefit from massive economies of scale
By using cloud computing, you can achieve a lower variable cost than you can get on your own. Because usage from hundreds of thousands of customers is aggregated in the cloud, providers
such as AWS can achieve higher economies of scale, which translates into lower pay as-you-go prices.
-Stop guessing capacity
Eliminate guessing on your infrastructure capacity needs. When you make a capacity decision prior to deploying an application, you often end up either sitting on expensive idle resources or
dealing with limited capacity. With cloud computing, these problems go away. You can access as much or as little capacity as you need, and scale up and down as required with only a few
minutes’ notice.
-Increase speed and agility
In a cloud computing environment, new IT resources are only a click away, which means that you reduce the time to make those resources available to your developers from weeks to just
minutes. This results in a dramatic increase in agility for the organization, since the cost and time it takes to experiment and develop is significantly lower.
-Stop spending money running and maintaining data centers
Focus on projects that differentiate your business, not the infrastructure. Cloud computing lets you focus on your own customers, rather than on the heavy lifting of racking, stacking, and
powering servers.
-Go global in minutes
Easily deploy your application in multiple regions around the world with just a few clicks. This means you can provide lower latency and a better experience for your customers at minimal
cost.
What are the 3 main models for cloud computing?
- S(oftware)aaS
- P(latform)aaS
- I(nfrastructure)aaS
What is Infrastructure as a Service? (IaaS)
-Contains the basic building blocks for cloud IT and typically provides access to
networking features, computers (virtual or on dedicated hardware), and data storage space.
-Has highest level of flexibility and management control over your IT resources and is most
similar to existing IT resources that many IT departments and developers are familiar with today
-EXAMPLE: AWS EC2, Google Compute Engine (GCE)
What is Platform as a Service? (PaaS)
- Removes the need for your organization to manage the underlying infrastructure (usually hardware and operating systems) and allows you to focus on the deployment and management of your
application
-This helps you be more efficient as you don’t need to worry about resource procurement, capacity planning,
software maintenance, patching, or any of the other undifferentiated heavy lifting involved in running your
application.
-EXAMPLE: AWS Elastic Beanstalk, Windows Azure
What is Software as a Service? (SaaS)
-Provides you with a completed product that is run and managed by the service
provider
-Mostly refers to to end-user applications
-With a SaaS offering you do not have to think about how the service is maintained or how the underlying
infrastructure is managed; you only need to think about how you will use that particular piece of software
-EXAMPLE: web-based email which you can use to send and receive email without having to manage feature additions to the email product or maintain the servers and operating systems that the email program is running on.
-EXAMPLE: Amazon Rekognition, Google Apps
What are the three main Cloud Computing Deployment Models? Describe them.
Cloud: A cloud-based application is fully deployed in the cloud and all parts of the application run in the cloud.
Hybrid: A way to connect infrastructure and applications between cloud-based resources and
existing resources that are not located in the cloud.
On-Premises: The deployment of resources on-premises, using virtualization and resource management tools, is sometimes
called the “private cloud.”
What is the AWS Architecture System and what does it do?
Provides reference architecture diagrams, vetted architecture solutions, Well-Architected best practices, patterns, icons, and more. This expert guidance was contributed by AWS cloud architecture experts, including AWS Solutions Architects, Professional Services Consultants, and Partners.
-Helps cloud architects build secure, high-performing, resilient, and efficient infrastructure
for their applications and workloads
• Based on five pillars — operational excellence, security, reliability, performance efficiency, and cost optimization
