Everything you need to know about Cloud computing.

1. What is cloud computing?

The on-demand, pay-as-you-go delivery of IT resources through the Internet is known as cloud computing. You can use technological services, such as computing power, storage, and databases on an as-needed basis from a cloud provider like Amazon Web Services (AWS) rather than purchasing, operating and maintaining physical data centers and servers.

Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service(SaaS) are the three main categories or types of cloud computing into which these services run.

A cloud can be either public or private. Anyone online can purchase services from a public cloud. With specific access and authorization settings, a private cloud is a proprietary network or data center that offers hosted services to a small group of users. Cloud computing's objective, whether it's private or public, is to offer simple, scalable access to computer resources and IT services.

2. Who is using cloud computing?

A wide range of use cases, including data backup, disaster recovery, email, virtual desktops, software development, and testing, big data analytics, and customer-facing web apps, are being used by businesses of every size, type, and sector. For instance, healthcare organizations are utilizing the cloud to provide more patient-specific treatments. Companies that provide financial services are utilizing the cloud to support real-time fraud prevention and detection. Additionally, online games are distributed to millions of players worldwide by video game developers via the cloud.

3. Types of cloud computing services.

Infrastructure as a Service, Platform as a Service, and Software as a Service are the three basic categories of cloud computing. You can choose the appropriate collection of services for your needs by taking advantage of the various levels of control, flexibility, and management offered by each form of cloud computing.

A. Infrastructure as a Service (IaaS).

the most fundamental class of cloud computing offerings. IaaS allows you to pay-as-you-go rent IT infrastructure from a cloud provider, including servers and virtual machines (VMs), storage, networks, and operating systems.

B. Platform as a Service (PaaS).

Cloud computing services that provide an on-demand environment for designing, testing, delivering, and maintaining software applications are referred to as platforms as a service. The goal of PaaS is to free developers from having to set up or manage the servers, storage, networks, and databases required for development to swiftly create online or mobile apps.

C. Software as a Service (SaaS).

You can get a full product through SaaS that is operated and controlled by the service provider. Most often, when individuals mention SaaS, they're talking about end-user applications (such as web-based email). You don't need to consider how the service is handled or the underlying infrastructure is maintained while using a SaaS provider. You only need to consider how you plan to use that specific software.

4. How does it work?

An internet network connection links the front end, which includes the accessing client device, browser, network, and cloud software applications, with the back end, which consists of databases, servers, and computers. The back end functions as a repository, storing data that is accessed by the front end.

A central server controls communications between the front and back ends. The central server uses protocols to speed up data exchange. To control connectivity between various client devices and cloud servers, the central server makes use of both software and middleware. Usually, each distinct application or workload has its dedicated server.

5. Top benefits of using cloud computing.

A. Cost

With cloud computing, there is no longer a need to invest in hardware, software, or the infrastructure needed to set up and maintain on-site datacenters, including server racks, 24/7 electricity for power and cooling, and IT professionals to oversee the infrastructure. It quickly adds up.

B. Speed

The majority of cloud computing services are self-service and on-demand, making it possible to provide even large quantities of computing resources quickly and generally with only a few mouse clicks. This gives enterprises a great deal of flexibility and relieves the burden of capacity planning.

C. Productivity

Hardware installation, software patching, and other time-consuming IT management tasks are frequently needed for on-site datacenters. Many of these duties are no longer necessary thanks to cloud computing, freeing up IT employees' time to focus on more crucial business objectives.

D. Performance

The largest cloud computing services are powered by a global network of safe datacenters that are routinely updated with the newest models of quick and effective computing gear. In comparison to a single corporate data center, this has several advantages, including lower network latency for applications and greater economies of scale.

BLOCK CHAIN: Introduction

 What is blockchain?

Blockchain is a mechanism for storing data in a manner that makes it impossible to change or hack.

A blockchain is simply a network of computer systems that duplicates and distributes a digital ledger of transactions across the entire network. Each block on the chain comprises several transactions, and each participant's ledger receives a copy of each new transaction that takes place on the blockchain. Distributed Ledger Technology refers to the decentralized database that is governed by numerous users ( DLT ).

In a blockchain, data is stored in blocks that are connected in a chain. because data connect in a chain so nobody can change or modify it.

As a result, if hackers try to hack a blockchain system, then he has to change every block in the chain which is not possible.

History of blockchain.

In 2008, Satoshi Nakamoto conceptualized the theory of distributed blockchains. He makes a special improvement to the design that makes it possible to add blocks to the initial chain without needing them to be signed by reliable parties. The updated trees would include a safe record of data transfers. It timestamps and verifies each exchange via a peer-to-peer network. It might be run independently without a centralized authority. These developments were so advantageous that they established blockchains as the foundation of cryptocurrencies. In the cryptocurrency industry today, the design acts as the public ledger for all transactions.

Blockchains have been steadily and optimistically evolving. In Satoshi Nakamoto's initial paper, the phrases "block" and "chain" were used individually, although they later gained popularity as one word, The blockchain.

by 2016. The blockchain file size for cryptocurrencies, which keeps track of all network transactions, has increased recently from 20 GB to 100 GB.

How does blockchain work?

Blockchain aims to make it possible to share and record digital information without editing it. A blockchain serves as the basis for immutable ledgers, or records of transactions that cannot be changed, removed, or destroyed. Blockchains are also referred to as distributed ledger technologies because of this we also called it (DLT).

You can easily understand it's the mechanism by these steps.

1. Record the transaction.

2. Gain consensus.

3. Link the blocks.

4. Share the ledger.

What are the benefits of blockchain?

Blockchain technology brings many benefits. In the subsections that follow, we list some of them.

1. Advance security.

Modern digital transactions require a high level of security and trust, which blockchain platforms offer. A constant worry is that someone may alter the underlying program to create fictitious funds for himself. Contrarily, blockchain leverages the three principles of decentralization, consensus, and cryptography to build a very secure underpinning software system that is virtually impossible to alter. No single point of failure exists, and only one user is unable to alter the transaction records.

2. Improved efficiency.

Business-to-business transactions can be time-consuming and lead to operational bottlenecks, particularly when third-party regulatory agencies and compliance are involved. Such commercial transactions are quicker and more efficient thanks to blockchain's transparency and smart contracts.

Conclusion.

No little part of the reason why blockchain is finally gaining recognition is due to bitcoin and cryptocurrencies. Blockchain, a buzzword on everyone's lips as an investor in the country, promises to reduce middlemen while increasing accuracy, efficiency, security, and cost-effectiveness in commercial and government activities.