Merge pull request AlessioCasco#6 from AlessioCasco/new_structure

New structure

Exam Readiness/README.md

@@ -0,0 +1,61 @@
+# Exam Readiness: AWS Certified Solutions Architect – Associate
+
+## The Exam Overview
+
+## Module 1 - Design Resilient Architectures
+
+### RPO and RTO
+
+* RPO Is Recovery Point Objective. How much data is lost if a system fails?
+* RTO Is Recovery Time Objective. How long does it take for the system to recover and come back on-line again?
+
+![rpo_rto](https://upload.wikimedia.org/wikipedia/en/6/69/RPO_RTO_example_converted.png)
+
+### Text Axioms 1
+
+* Expect "Single-AZ" will never be a right answer
+* Using AWS managed services should always be prefered
+* Fault-tolerant and high availability are not the same thing
+  * Fault tolerant: Means that the system hides the failure from the users and there is no loss of service
+  * High availability: Means that the system will always be up and it can fail-over in the event of failure
+* Expect that everything will fail at some point and design accordingly
+
+## Module 2 - Design Performant Architectures
+
+Security:
+
+* [AWS Shield](https://aws.amazon.com/shield/): WS Shield is a managed Distributed Denial of Service (DDoS) protection service
+* [AWS WAF](https://aws.amazon.com/waf/): AWS WAF is a web application firewall that helps protect your web applications from common web exploits that could affect application availability, compromise security, or consume excessive resources
+
+### Text Axioms 2
+
+* If data is unstructured, Amazon S3 is generally the storage solution.
+* Use caching strategically to improve performance.
+* Know when and why to use Auto Scaling.
+* Choose the instance and database type that makes the most sense for your workload and performance need.
+
+## Module 3 - Specify Secure Applications and Architectures
+
+### Text Axioms 3
+
+* Look down the root user
+* Security groups only allow. Network ACLs allow explicitly deny.
+* Prefer IAM roles over access keys
+
+## Module 4 - Design Cost-Optimized Architectures
+
+### Text Axioms 4
+
+* If you know it's going to be on, reserve it.
+* Any unused CPU time, is a waste of money.
+* Use the most cost-effective data storage service and class.
+* Determine the most cost-effective EC2 pricing model and instance type for each workload.
+
+## Module 5 - Define Operationally-excellent Architectures
+
+### Text Axioms 5
+
+* IAM Roles are easier and safer than keys and passwords.
+* Monitor metrics across the system.
+* Automate responses to metrics where appropriate
+* Provide alerts for anomalous conditions

README.md

@@ -12,13 +12,22 @@ This is my collection of notes from the
 It can be used also for the
 _[Udemy | AWS Certified Solutions Architect - Associate 2019](https://www.udemy.com/aws-certified-solutions-architect-associate/) one, since they use the same contents made by the [A cloud Guru](https://acloud.guru/) team._
 
+================
+
 ## Updates
 
 \- Update 4 April 2019 -
 
 * acloud.guru [just updated](https://info.acloud.guru/resources/whats-new-april-2019) the CSA course.
 * From a quick look it seems they put all the Exam Tips they collected in previous months within the relative sections of the course and now Lambda has its own section, is not anymore within the EC2 one.
 
+\- Update 17 April 2019 -
+
+* Added the md's for the [Exam Readiness Training](https://www.aws.training/learningobject/curriculum?id=20685)
+* Reorganized the structure of the repo.
+
+================
+
 ## What it is
 
 The A cloud Guru course is huge and in order to explain to you the basic concepts, it has sometimes to give you pieces of information that are not required to be known in order to pass the exam. So my intent here is to save in one place everything the exam requires you to know without the other stuff.