Cloud Computing IoT

What is Cloud Computing?

It delivers services like storage, software, and processing over the internet.

What are the 3 main benefits of Cloud Computing?

Reduced cost, flexibility, and easy access from anywhere.

What are the 5 key characteristics of cloud services?

On-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service.

What is SaaS?

"Software as a Service – users access software through the web (e.g., Gmail, Zoom).

What is PaaS?

Platform as a Service – provides a platform for developers to build and test apps (e.g., Google App Engine).

What is IaaS?

Infrastructure as a Service – provides virtual hardware and storage (e.g., AWS, Azure)

What is XaaS?

Anything as a Service – includes all cloud-based service models.

What are the 3 cloud deployment types?

Public, Private, and Hybrid Cloud.

What is Public Cloud?

Shared cloud managed by a provider; cheaper and flexible but less secure.

What is Private Cloud?

Used by one organization only; more secure but more expensive.

What is Hybrid Cloud?

Mix of public and private cloud; balances flexibility and security.

What does 'elasticity' mean in cloud computing?

The ability to scale resources up or down as needed.

What is Autonomic Computing?

Systems that manage themselves automatically (self-healing, self-optimizing).

What does 'Distributed' mean in cloud computing?

Data is spread across multiple devices for reliability.

What does 'Immutable' mean?

Cannot be changed; new environments replace old ones.

What does 'Ephemeral' mean?

Temporary; infrastructure that exists only as needed.

What is Cloud Repatriation?

Moving data or workloads from the cloud back to local systems.

Why do companies repatriate data?

To cut costs, improve privacy, or avoid cloud outages.

What is IDaaS?

Identity as a Service – centralizes login and authentication.

What is DRaaS?

Disaster Recovery as a Service – backs up and restores data after an outage.

What is the Internet of Things (IoT)?

A network of physical objects with sensors that collect and share data online.

Give examples of IoT devices.

Smart watches, home assistants, smart fridges, security cameras.

What are 4 applications of IoT?

Wearables, Smart Homes, Self-driving Cars, Smart Cities.

What are benefits of IoT?

Lower costs, better customer experience, improved safety, and smarter decisions.

What are common IoT issues?

Security risks, faulty sensors, and missing/inaccurate data.

What is a sensor?

A device that detects changes in the environment and sends data.

What are the 4 types of IoT applications?

Connect & Monitor, Control & React, Predict & Adapt, Transform & Explore.

What is a Smart City?

A city that uses IoT and AI to improve services and infrastructure.

What does 'Multicloud' mean?

Using more than one cloud provider to avoid lock-in or improve backup.