Fundamentals of cloud based systems

Summary

The video discusses how heterogeneous information systems can communicate and be made interoperable, particularly in the context of supply chain integration through cloud infrastructure. It explains cloud computing, its characteristics (such as resource pooling, rapid elasticity, and pay-per-use), and the three main service models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). The video also addresses deployment models, advantages, disadvantages, and security concerns of cloud computing, concluding with potential issues like data security, reliance on internet access, and high-performance computing challenges.

Takeaways

• 🌐 Cloud computing allows companies to communicate and reduce infrastructure costs by using shared resources over the internet.
• 💾 Cloud computing is defined as the delivery of computing resources as a service rather than a product, providing access to a shared pool of configurable computing resources.
• 📡 Cloud characteristics include remote hosting, ubiquity, pay-as-you-go, and resource pooling for optimized usage.
• 🚀 Rapid elasticity in cloud computing enables users to scale resources like storage instantly based on demand.
• 🏗️ Infrastructure as a Service (IaaS) offers users access to computing resources like storage and processors, while vendors manage infrastructure.
• 🛠️ Platform as a Service (PaaS) provides not only infrastructure but also a development environment with tools for testing and managing applications.
• 📊 Software as a Service (SaaS) delivers application-level software through the internet, allowing users to subscribe and access it from anywhere.
• 🏢 Cloud deployment models include private, community, public, and hybrid clouds, each catering to different organizational needs.
• 🔒 Security concerns in cloud computing revolve around data ownership, policy adherence, and the potential risks of relying on external providers.
• 📉 Cloud computing advantages include lower costs, access to advanced infrastructure, and ease of collaboration, but disadvantages like internet dependency, speed issues, and data security remain.

Q & A

What is cloud computing?

Cloud computing is the delivery of computing resources, software, and information as a service over the network rather than a product. It provides shared, configurable computing resources that can be accessed on-demand.

What are the basic characteristics of a cloud-based system?

A cloud-based system is remotely hosted, available from anywhere, uses a pay-per-use model, and is based on resource pooling. It also offers rapid elasticity and is treated as a commodity.

What is resource pooling in the context of cloud computing?

Resource pooling refers to the ability to share computing resources among multiple users or entities. When one user isn’t utilizing resources, others can use them, ensuring maximum utilization.

What are the three basic cloud service models?

The three basic cloud service models are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).

What is Infrastructure as a Service (IaaS)?

IaaS provides users with access to computing resources such as memory, storage, and servers. Instead of purchasing hardware, users rent these resources based on their consumption.

What is Platform as a Service (PaaS)?

PaaS offers both infrastructure and a platform for users to develop, manage, and deliver applications. It provides tools like operating systems and compilers, allowing users to focus on development.

What is Software as a Service (SaaS)?

SaaS is a cloud offering where users access application-level software via the internet. The provider manages the software, and users typically subscribe to the service without worrying about updates or maintenance.

What are the different deployment models of cloud computing?

The deployment models are private cloud (used by one organization), community cloud (shared by a specific group of organizations), public cloud (available to the public), and hybrid cloud (a combination of two or more clouds).

What are some concerns regarding cloud computing?

Concerns include dependence on third parties, security issues, data ownership, potential monopolization by major companies, and the risk of being locked out of accounts. There are also issues related to internet availability and performance.

What are the advantages of cloud computing?

Advantages include lower computational costs, improved performance, automatic software updates, enhanced document compatibility, unlimited storage capacity, increased data reliability, and better collaboration due to shared platforms.