Cloud Computing and Networking Concepts

A set of flashcards designed to cover key concepts from the lecture on cloud computing and networking, including definitions of ports, principles of cloud-native applications, and AWS services.

Port Definition

A 16-bit number (0-65535) that acts as an endpoint for communication in computer networking.

Port 3389

Used for RDP (Remote Desktop Protocol).

Port 3306

Used for MySQL (database engine).

Port 80

Used for HTTP (web browsing).

Port 443

Used for HTTPS (secure web browsing).

Port 25

Used for SMTP (email).

Port 22

Used for SSH (secure remote access).

Port 53

Used for DNS (domain name service).

Availability Zone (AZ)

A group of logical data centers within an AWS Region, each with redundant power and networking.

AWS Region

A physical location around the world containing multiple Availability Zones.

Cloud Migration

The process of moving applications, data, and services to a cloud computing environment.

Lift-and-Shift

Rehost; duplicating infrastructure in the cloud without significant changes.

Refactor

Making minor modifications to an application to work better in the cloud.

Re-platform

Making major modifications to an application to take advantage of cloud functionalities.

Cloud Native

Designing applications specifically for cloud computing architecture.

Rebuild

Totally rewriting an application from scratch for the cloud.

Replace

Scrapping the old application and creating a new one for the cloud.

Start Fresh

Building a new application for the cloud without any previous version.

Decouple the Data

Storing data independently and accessing it through an API.

API

Application Programming Interface; allows different software components to communicate.

Design as Services

Creating applications as a collection of discrete services or APIs.

Scalability

The capability of a system to accommodate growing amounts of work or its potential to be enlarged.

Zero Trust Model

A security approach that requires continuous validation of user identities and access.

Identity Access Management

Processes for managing digital identities and defining user roles to restrict access.

Data Access Layer

An abstraction that allows data to be retrieved and manipulated independently of applications.

Performance and Scaling

Modeling applications to efficiently handle load and to scale according to demand.

Latency

The delay before a transfer of data begins following an instruction.

API Efficiency

Designing APIs to minimize data transmission and improve performance.

Compliance Issues

Regulations that applications must adhere to, particularly concerning sensitive data.

Data Storage Flexibility

The ability to store data in various environments and locations.

Application Chattiness

Excessive communication between components that can hinder performance.

Cost Optimization

Managing expenses associated with API calls and application performance.

User Trust

Confidence users have in using an application based on security measures implemented.

Business Impact of Performance

The consequences of application performance on sales and customer satisfaction.

Rideshare Application Example

An illustration of a cloud-native application with various services working together.

AWS Lambda

A serverless computing service that runs code in response to events.

AWS S3

A scalable object storage service offered by AWS.

AWS CloudFront

A content delivery network (CDN) service for distributing web content.

Front-end User Interface

The part of the application that interacts with the end-user.

Back-end Application Processing

The server-side logic and services that process user requests.