# Getting Started with AWS
#### Contents for Today
* Cloud Computing
* AWS
* Main services
* Security
* Architecture
#### Useful Informations
1. On-premise
: A model where users directly manage Infrastructure, Platform, and Applications
2. Saas (Software as a Service)
: The most common type of Cloud Service where the service provider offers everything from Infrastructure to Software, providing services up to the Application Level
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## Intro to AWS Cloud
### What is Cloud Computing?
* A type of `Internet based computing` that processes information on other computers connected to the Internet rather than on your own computer
* Served when shared computer manage resources & data are requested
* A model that enables ubiquitous, convenient, on-demand network access to a shared pool of `configurable computer resources` (e.g., networks, servers, storage, applications, and services)
* Can be rapidly provisioned and released with minimal management effort
* `Cloud computing` and `Storage Solutions` provide users and businesses with various capabilities to store and process data in privately-owned data centers or third-party data centers
* Relies on sharing of resources to achieve coherence and economies of scale, similar to a utility over an electricity network
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### Cloud Computing Services
#### 1. On-premise (Traditional IT)
* Users directly manage Infrastructure, Platform, and Applications
* Large companies build their own **IDC (Internet Data Center)**, while typical cases involve renting space in an IDC, installing physical servers, and managing all Hardware, Operating System, and Server Applications
#### 2. IaaS (Infrastructure as a Service)
* `AWS EC2` is representative
* A service that supports **IT Infrastructure** such as Virtual Servers, Data Storage & Hosting Computers, Networks - a Cloud Model that provides Hardware as a Service
* Manage OS & Applications
#### 3. PaaS (Platform as a Service)
* `AWS Elastic Beanstalk` is representative
* Using Elastic Beanstalk, you can **quickly deploy, operate, and manage** applications in the AWS Cloud without worrying about the **infrastructure** that runs the application!
* Serves Fundamental IaaS + Development Tools & Functions + Deployment
-> They serve pretty much everything you need when you develop & deploy
* Developers only have to write `logic` to connect their application & served services
#### 4. Saas (Software as a Service)
* `Google Apps`, `Office 365` are representative
* The most common type of Cloud Service where the service provider offers everything from Infrastructure to Software
-> Serves **application level service**
* Provided directly to actual users rather than developers
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## AWS (Amazon Web Service) Cloud Computing
### AWS
> Provides various Infrastructure and Application Services that allow you to run almost all physical computing resources through the Cloud, from Web and mobile Apps, Big data projects, to Social games
* The most secure and reliable Cloud Service
* Provides easy and fast **scalability**
* Provides a platform that can **reduce costs** by paying only for **what you use** without upfront costs or long-term commitments
### Amazon Cloud Service
1. Provides various Application Services including Computing, Storage, Database, Networking, Analytics, Machine Learning, AI, IoT, Security, Application Development, Deploy & Maintenance
2. Not only provides the most **comprehensive range of services**, but also supports the **deepest functionality** in those services
3. `Amazon Elastic Container Service(ECS)`, `Amazon Elastic Container Service for Kubernetes(EKS)` and `AWS Fargate` gives you the most effective way to execute container
4. the most safe and flexible cloud computing environment
5. AWS's core infrastructure is designed to meet the **security requirements** of military, international banks, and other security-critical organizations
6. Each region is built & operated using the same secure hardware/software
* All AWS customers can benefit from the only commercial cloud that supports a supply chain associated with **secure** and **proven** service offerings that are safe enough to handle security-critical workloads
* Supports a deep **cloud security set** including 263 **security**, **compliance** and governance services/main functions
7. Supports 85 **security standards** and **compliance certifications**, and all 116 AWS services that store customer data provide the ability to **encrypt** that data
8. Achieved very rapid innovation in new areas such as `Machine Learning`, `AI`, `IoT`, `Serverless Computing`
9. With AWS, you can leverage the latest technologies to innovate, differentiate, and deliver solutions faster
ex)
* In 2014, launched AWS Lambda, first introducing the event-driven serverless computing space
* With AWS Lambda, developers can run code without provisioning or managing servers, without worrying about provisioning, modification, patch or manage of underlying servers
* Lambda rocks
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## AWS Main Services
### AWS Security
: Security, identity and compliance products
* AWS's highest priority == `Cloud Security`
* AWS customers can benefit from data center & network architecture built to meet the requirements of the most security-sensitive organizations
### AWS Architecture
* ex) AWS Industrial Predictive Maintenance Machine Learning Model
* Using AWS IoT SiteWise & AWS IoT Analytics with Amazon SNS anomaly detection notifications to create Predictive Maintenance ML models
#### AWS Reference Model Architecture
1. Web Application Hosting
: Build highly scalable and reliable web or mobile applications
2. Content & Media Serving
: Build reliable systems that serve huge amounts of content and media
3. Batch Processing
: Build auto-scalable batch processing systems like video processing pipelines
4. Fault Tolerance and HA
: Build systems with high availability that quickly fail over to new instances when failures occur
5. Large-scale Computing
: Build high-performance computing systems that process Big data
6. Ad Support
: Build highly scalable online advertising serving solutions
7. DR (Disaster Recovery) for Local Applications
: Build cost-effective disaster recovery (DR) solutions for on-premise applications
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