Cloud Computing Explained

Key Concepts

Cloud computing models define how services are provided to users. The three primary models are:

Infrastructure as a Service (IaaS): Provides virtualized computing resources over the internet. Think of it as renting a fully equipped workshop where you can build and manage your projects.
Platform as a Service (PaaS): Offers a platform allowing customers to develop, run, and manage applications without dealing with infrastructure. Imagine it as a ready-made kitchen where you can cook your meals without worrying about the stove or oven.
Software as a Service (SaaS): Delivers software applications over the internet, on a subscription basis. Consider it as a restaurant where you can order and enjoy meals without needing to cook or clean up.

Cloud deployment models describe how cloud services are implemented and where they are hosted. The main models are:

Public Cloud: Services are provided over the public internet and are available to anyone who wants to purchase them. Think of it as a public library where anyone can access books and resources.
Private Cloud: Services are used by a single organization and are not exposed to the public. Imagine it as a private library within a company, accessible only to employees.
Hybrid Cloud: Combines public and private clouds, allowing data and applications to be shared between them. Consider it as a library that has both public sections and private rooms for special collections.

Cloud services are the offerings provided by cloud computing models. Key services include:

Compute: Provides virtual machines and containers for running applications. Think of it as renting different types of vehicles for your transportation needs.
Storage: Offers scalable storage solutions for data. Imagine it as a warehouse where you can store goods of various sizes and types.
Networking: Provides virtual networks to connect cloud resources. Consider it as a road network that connects different parts of a city.
Database: Offers managed database services. Think of it as a library catalog system that helps you find and manage information efficiently.

Cloud security involves protecting data, applications, and infrastructure associated with cloud computing. Key aspects include:

Data Encryption: Ensures data is secure during transmission and storage. Think of it as a locked box that only authorized people can open.
Identity and Access Management (IAM): Controls who can access cloud resources. Imagine it as a security system that grants access only to authorized personnel.
Network Security: Protects cloud networks from threats. Consider it as a security fence around a property, keeping intruders out.
Compliance: Ensures cloud services meet regulatory requirements. Think of it as following a set of rules to ensure safety and quality.