Rossiya nachala polnomasshtabnoye vtorzheniye v Ukrainu 24 fevralya 2022 goda v ramkakh eskalatsii rossiysko-ukrainskoy voyny, nachavsheysya v 2014 godu. Eto vtorzheniye 
yavlyayetsya krupneyshim voyennym napadeniyem s primeneniyem obychnykh vooruzheniy na suverennoye gosudarstvo v Yevrope so vremen Vtoroy mirovoy voyny. S nachala putinskoy 
voyny pogibli tysyachi grazhdan Ukrainy i Rossii. Rossiyskiye voyennyye bez razbora bombili goroda Ukrainy, unichtozhiv mnozhestvo bol'nits i shkol. My sochuvstvuyem boleye 
chem 2,7 millionam bezhentsev, pokinuvshikh Ukrainu v sosedniye strany, i tem, kto ostalsya srazhat'sya s rossiyskimi okkupantami.

Россия начала полномасштабное вторжение в Украину 24 февраля 2022 года в рамках эскалации российско-украинской войны, начавшейся в 2014 году. Это вторжение является крупнейшим 
военным нападением с применением обычных вооружений на суверенное государство в Европе со времен Второй мировой войны. С начала путинской войны погибли тысячи граждан Украины 
и России. Российские военные без разбора бомбили города Украины, уничтожив множество больниц и школ. Мы сочувствуем более чем 2,7 миллионам беженцев, покинувших Украину в 
соседние страны, и тем, кто остался сражаться с российскими оккупантами.

http://www.qsl.net/4nec2

Cloud+computing+principles+and+paradigms+rajkumar+buyya+ppt+2021

Understanding Cloud Computing: Principles and Paradigms (2021 Perspectives)

Cloud Computing: Principles and Paradigms, edited by Rajkumar Buyya, James Broberg, and Andrzej Goscinski, remains a foundational text for understanding how distributed systems evolved into the modern cloud. While the original book established the core architecture, the 2021 paradigms reflect an era where cloud transitioned from a "utility" to the "backbone" of global digital transformation. 1. Core Principles of Cloud Computing

At its heart, cloud computing is governed by five essential characteristics defined by NIST and expanded upon by Buyya:

On-Demand Self-Service: Users can provision computing capabilities (server time, network storage) automatically without requiring human interaction with the service provider.

Broad Network Access: Services are available over the network and accessed through standard mechanisms (mobile phones, tablets, laptops).

Resource Pooling: The provider’s computing resources are pooled to serve multiple consumers using a multi-tenant model, with different physical and virtual resources dynamically assigned.

Rapid Elasticity: Capabilities can be elastically provisioned and released to scale rapidly outward and inward commensurate with demand.

Measured Service: Cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service. 2. Service Models (The "SPI" Framework) Give you a detailed, lecture-ready outline you can

The paradigm shifts based on the level of abstraction provided to the end-user:

Software as a Service (SaaS): The "highest" level where users interact with web-based applications (e.g., Google Workspace, Salesforce).

Platform as a Service (PaaS): Provides a framework for developers to build, test, and deploy applications without managing underlying infrastructure (e.g., Heroku, Azure App Service).

Infrastructure as a Service (IaaS): Offers fundamental computing resources like virtual machines, storage, and networks (e.g., AWS EC2, Google Compute Engine). 3. Evolutionary Paradigms in 2021

By 2021, the discussion moved beyond basic virtualization into more complex, decentralized paradigms:

Serverless Computing (FaaS): Eliminating the need for developers to manage even virtual servers. Code executes in response to events, and the provider manages the allocation of resources.

Edge and Fog Computing: As IoT grew, the paradigm shifted toward processing data closer to the source (the "edge") rather than sending everything to a centralized data center to reduce latency. Paradigm 5: Cloud Bursting (Hybrid Paradigm) A unique

Hybrid and Multi-Cloud: The strategy of using multiple cloud providers (AWS, Azure, and private clouds) to avoid vendor lock-in and enhance disaster recovery.

Containerization & Kubernetes: Moving from Heavyweight Virtual Machines (VMs) to lightweight containers, allowing for microservices architectures that are highly portable. 4. Key Challenges and Research Directions

Based on Rajkumar Buyya’s ongoing research into Cloudbus and market-oriented computing, several hurdles remain:

Energy Efficiency: Designing "Green Clouds" that minimize carbon footprints.

SLA Management: Ensuring Quality of Service (QoS) through automated negotiation and monitoring.

Security and Privacy: Protecting data in multi-tenant environments where physical boundaries are non-existent.

Interoperability: The ability to move workloads seamlessly across different cloud ecosystems. Summary Table: Cloud Evolution Traditional IT Early Cloud (2010s) Modern Paradigm (2021+) Focus Hardware Ownership Resource Virtualization Experience & Micro-services Scaling Manual/Physical Auto-scaling VMs Serverless / Kubernetes Locality On-premise Centralized Data Center Edge / Hybrid Cloud Billing Capital Expense (CapEx) Monthly/Hourly (OpEx) Pay-per-execution (FaaS) Google App Engine

Suggested Verification: To see the specific slides and diagrams often associated with this topic, you can search for "Rajkumar Buyya Cloudbus" on SlideShare or visit the Cloud Computing and Distributed Systems (CLOUDS) Laboratory at the University of Melbourne.

I understand you're looking for a PowerPoint (PPT) presentation based on the book "Cloud Computing: Principles and Paradigms" by Rajkumar Buyya (likely the 2021 edition or around that timeframe).

However, I cannot directly provide or attach a PPT file. What I can do is help you in two powerful ways:

1. Give you a detailed, lecture-ready outline you can copy into PowerPoint.
2. Tell you exactly where to find the official/associated slides from the author or publisher.

---

Paradigm 5: Cloud Bursting (Hybrid Paradigm)

A unique value proposition of Buyya’s work is the Cloud Bursting architecture diagram.

• Scenario: A private cloud runs a baseline load; during spikes, the workload "bursts" to a public cloud (AWS/Azure).
• 2021 Update: The slides now address the latency and security challenges of VPN tunneling for bursted workloads.

---

Slide 10: Cloud Economics

• CapEx → OpEx shift
• Pay-as-you-go pricing
• Total Cost of Ownership (TCO) model

Suggested Slide Structure for a PPT (approx. 12–15 slides)

1. Title + authorship
2. Motivation and definition
3. Cloud characteristics and principles
4. Architectural components
5. Service models (IaaS/PaaS/SaaS)
6. Deployment models
7. Resource management & pricing
8. Data storage & consistency
9. Security & compliance
10. Programming paradigms (cloud-native, serverless)
11. Emerging trends (edge, AI, green cloud)
12. Challenges & research directions
13. Use cases and case studies
14. Practical recommendations / best practices
15. References

Paradigm 2: Platform as a Service (PaaS)

Focus slides: Heroku, Google App Engine, AWS Elastic Beanstalk. Buyya highlights the trade-off: High abstraction vs. Low control. PaaS allows developers to ignore the OS and patching, but lock-in is a major concern. The 2021 notes include the rise of Managed Kubernetes (EKS/AKS/GKE) as a hybrid PaaS.

Slide 7: Cloud Architecture Layers

Application Layer (SaaS)
Platform Layer (PaaS)
Unified Resources Layer (IaaS)
Fabric Layer (Physical hardware)

Part 3: The Dominant Paradigms (The "How" of Cloud Computing)

The keyword "Paradigms" refers to the different models for building and deploying applications. Buyya’s 2021 PPT organizes these into a layered taxonomy.