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As demand (user base) on a web APPLICATION INCREASES and decreases – ELASTIC systems allow for the quick addition and SUBTRACTION of servers. The removal of unused servers can drastically reduce cost.

As demand (user base) on a web application increases and decreases – Elastic systems allow for the quick addition and subtraction of servers. The removal of unused servers can drastically reduce cost.

REDUNDANT backups and the ability to share/access files ACROSS multiple devices make files stored in the CLOUD “HIGHLY available”.

Redundant backups and the ability to share/access files across multiple devices make files stored in the cloud “highly available”.

1. Redundant BACKUPS of stored files.
2. ABILITY to share/access files from MULTIPLE devices.

To act as a “look up” SERVICE for converting domain NAMES into IP addresses.

To act as a “look up” service for converting domain names into IP addresses.

At the highest level, AWS’ physical INFRASTRUCTURE is made up of numerous regions that are LOCATED all AROUND the world.

Each region is comprised of multiple AVAILABILITY Zones, which are where specific AWS data centers are located.

At the highest level, AWS’ physical infrastructure is made up of numerous regions that are located all around the world.

Each region is comprised of multiple Availability Zones, which are where specific AWS data centers are located.

AWS is a cloud services provider. Also KNOWN as Infrastructure as a Service (IAAS).

AWS is a cloud services provider. Also known as Infrastructure as a Service (Iaas).

The IP ADDRESS of the WEB SERVER.

The IP address of the web server.

LOCATED in each Availability Zone is one or more AWS Data Centers. These data centers contain the physical servers that RUN AWS RESOURCES.

Located in each Availability Zone is one or more AWS Data Centers. These data centers contain the physical servers that run AWS resources.

If you cannot ACCESS your files from ONE device/location, but can access from ANOTHER device/location – then you have sustained a fault in your SYSTEM but where STILL able to access your file.

If you cannot access your files from one device/location, but can access from another device/location – then you have sustained a fault in your system but where still able to access your file.

When you USE a cloud service (such as iCloud or DROPBOX) – you are utilizing server COMPUTERS owned, operated, and managed by those companies.

When you use a cloud service (such as iCloud or Dropbox) – you are utilizing server computers owned, operated, and managed by those companies.

AWS allows for quick (almost instant) addition of SERVERS to a running application. This allows a company to quickly scale the compute POWER available to their application.

In contract: adding servers to an on- premises data CENTER can TAKE days (or weeks).

AWS allows for quick (almost instant) addition of servers to a running application. This allows a company to quickly scale the compute power available to their application.

In contract: adding servers to an on- premises data center can take days (or weeks).

DOMAIN NAME SYSTEM.

Domain Name System.

• Storage
• COMPUTE Power
• DATABASES
• NETWORKING
• Security
• Monitoring and ANALYTICS

1. ICLOUD
2. DROPBOX

The ABILITY to withstand a certain AMOUNT of FAILURE and still remain functional (and/or be self-healing and return to full capacity).

The ability to withstand a certain amount of failure and still remain functional (and/or be self-healing and return to full capacity).

An IP address is the location/address of a computer on a network (internet). THINK of it as the computers phone number or mailing address. It is how the computer can be LOCATED.

An IP address is the location/address of a computer on a network (internet). Think of it as the computers phone number or mailing address. It is how the computer can be located.

1. PROPERLY configured WEB server with a PUBLIC IP ADDRESS and web formatted content.
2. A user (you) with a web BROWSER and the IP address of the web server.

The ABILITY to not only grow (scale) when required, but ALSO REDUCE in size when required.

The ability to not only grow (scale) when required, but also reduce in size when required.

DOMAIN NAMES are much easier to COMMUNICATE and remember.

Domain names are much easier to communicate and remember.

Refers to the concept of SOMETHING being ACCESSIBLE when you ATTEMPT to access it (and/or the ability to access something VIA multiple platforms).

Refers to the concept of something being accessible when you attempt to access it (and/or the ability to access something via multiple platforms).

Storage. MANY consumers USE cloud services to store their DATA (videos, music, movies, PICTURES, FILES, etc).

Storage. Many consumers use cloud services to store their data (videos, music, movies, pictures, files, etc).

1. The web browser contacts a DNS server and asks for the IP address associated with the domain name.
2. The DNS server sends the IP address BACK to the Browser.
3. The Browser sends a REQUEST (for CONTENT) to the IP address associated with the domain name.
4. The web server hosting web content receives the request and sends the web content back to the USER.

It assumes that:

• You already know (or can obtain) the IP Address of the WEB server.
• Can easily REMEMBER the IP Address for future USE.

It assumes that:

The ability to EASILY GROW in SIZE, capacity, and/or SCOPE when required (USUALLY based on demand).

The ability to easily grow in size, capacity, and/or scope when required (usually based on demand).

AVAILABILITY zones (within a region) work together to make up a collection of your AWS resources. PROPERLY designed applications will UTILIZE MULTIPLE availability zones for high availability and fault TOLERANCE. AZ’s have direct low latency connections between each other, and each AZ is isolated from the others to ensure fault tolerance.

Availability zones (within a region) work together to make up a collection of your AWS resources. Properly designed applications will utilize multiple availability zones for high availability and fault tolerance. AZ’s have direct low latency connections between each other, and each AZ is isolated from the others to ensure fault tolerance.