Anthony Sequeira [Anthony Sequeira] - AWS Certified Solutions Architect - Associate (SAA-C01) Cert Guide, First Edition

. d

. a

. c

. d

. c

. c

. a

. c

. d

. c

. Advantages include

• CapEx replaced by OpEx

• Lack of contractual commitments

• Reduction of required negotiations

• Reduced procurement delays

• Pay as you go model

• High levels of security possible

• Flexibility

• A massive global infrastructure

• SaaS, PaaS, and IaaS offerings

• Diverse API support

. EC2 is a major compute option in AWS. With EC2, you can easily create virtual machines that run on a hardware instance using a software definition made possible with an Amazon Machine Image (AMI).

. S3 is object-based storage in AWS. This is an extremely scalable and flexible storage model you can use for many different purposes.

. A Virtual Private Cloud in AWS is the collection of your virtual network resources. This includes subnets, routers, routing tables, and more.

. The AWS Global Infrastructure consists of regions located around the world with Availability Zones inside those regions. Of course, physical data centers are located in the Availability Zones.

. AWS offers caching, relational, nonrelational, and data warehouse database technologies.

. b

. d

. a

. a

. b

. c

. b

. a

. b

. c

. S3 Standard, S3 Standard-IA, S3 One Zone-IA, Glacier

. 99.999999999%

. Three

. The virtual machine running on the volume can be stopped and started with no data loss for the volume. EBS volumes are a separate entity and have a separate life span beyond the life of the instance. EBS volumes can be detached from one instance and attached to another. You can destroy an instance and keep EBS volumes around.

. NFSv4

. Backup and archiving

. b and d

. d

. a

. b and d

. a and d

. The creation of components that have the ability to be somewhat autonomous from each other.

. To help ensure that changes to one component have a minimal impact on other components.

To help ensure that a failure in one component has a minimal impact on other components.

To promote the creation of well-defined interfaces for inter-component communication.

To enable smaller services to be consumed without prior knowledge of their network topology details.

To reduce the impact on end users when you must perform changes to the design.

. Decoupled components that must be present in order for the system to function properly.

. Decoupled components that do not need to be present at all times in order for the system to function.

. The Simple Queue Service (SQS). Note that another queue service, called AmazonMQ, is a managed Apache ActiveMQ service. SQS is far more scalable and robust, whereas AmazonMQ provides a solution for a product already written on ActiveMQ. You can think of ActiveMQ as the queuing version of ElastiCache that simply runs open-source product under the hood. At the time of this writing, AmazonMQ is not in the exam targeted by this text.

. c

. c

. b

. c

. It is simple to understand and design.

It is easy to deploy.

It is easy to administer.

It has potentially lower costs associated with it.

It can be easy to test.

It is often ideal for small-scale environments that do not require scalability.

. Improved security

Improved performance

Improved scalability

Fine-grained management

Fine-grained maintenance

Higher availability

Promotes decoupling of components

Promotes multiple teams for architecture development, implementation, and maintenance

. Presentation Tier

Logic Tier

Data Tier

. Presentation TierEC2

Logic TierLambda

Data TierRDS

. a

. c

. d

. d

. c

. a

. a

. Elastic Load Balancing and Auto Scaling

. Replica

. Availability Zones

. a

. a

. b

. a

. Salt the name with a random hashed prefix.

. The AWS CLI should be considered in this case. Use the copy, move, or sync commands as needed.

. On these volumes, network traffic has its own bandwidth compared to communications between EC2 and EBS.

. Standard retrievals from your vault can take 35 hours.

. c

. b

. c

. d

. b

. a

. d

. d

. c

. c

. Create an Amazon Aurora MySQL DB cluster and make it a replication slave of your MySQL DB instance.

. Migrate to a DB instance class with a higher I/O capacity. Upgrade from standard storage options. Provision additional throughput capacity.

. As a general rule, you should maintain as few tables as possible in a DynamoDB application.