Wednesday, February 2, 2022

මොනවද මේ NFT කියන්නේ..

 NFT යනු දිලීර නොවන ටෝකන යන්නයි. නමුත් එය වඩා හොඳින් තේරුම් ගැනීමට, අපි පියවරෙන් පියවර කිමිදෙමු... 🏊🏊


NFT තේරුම් ගැනීමට, ඔබ blockchains තේරුම් ගත යුතුය. Blockchain යනු පද්ධතිය වෙනස් කිරීම, හැක් කිරීම හෝ වංචා කිරීම අපහසු හෝ කළ නොහැකි ආකාරයෙන් තොරතුරු පටිගත කිරීමේ පද්ධතියකි.ඩිජිටල් ලෙජරයේ ආකාරයක් වන බ්ලොක්චේන්  අත්‍යවශ්‍යයෙන්ම ඩිජිටල් ලෙජරයක් වන අතර එය බ්ලොක්චේන්හි ඇති පරිගණක ජාලය හරහා ලබා ගත හැකිය. මෙය cryptocurrency හි පදනමයි.


දැන්, ඔබ NFT එකක් ගන්නා විට, NFT යනු ඩිජිටල් ලෙජරයක ගබඩා කර ඇති දත්ත ඒකකයකි, බ්ලොක්චේන් ලෙස හැඳින්වේ, එය ඩිජිටල් වත්කමක් අද්විතීය වන අතර එබැවින් එකිනෙකට හුවමාරු කළ නොහැකි බවට සහතික කරයි. NFT ලෙජරවල සත්‍යතාව පිළිබඳ පොදු සහතිකයක් හෝ හිමිකාරිත්වය පිළිබඳ සාක්ෂියක් ලබා දීමට හිමිකම් කියන නමුත්, NFT මගින් ප්‍රකාශ කරන නීතිමය අයිතිවාසිකම් අවිනිශ්චිත විය හැකිය

NFT යටින් පවතින සංඛ්‍යාංක ගොනු බෙදාගැනීම හෝ පිටපත් කිරීම සීමා නොකරයි, අවශ්‍යයෙන්ම ඩිජිටල් ගොනු වල ප්‍රකාශන හිමිකම ප්‍රකාශ නොකරයි, සහ සමාන ආශ්‍රිත ගොනු සහිත NFT නිර්මාණය කිරීම වළක්වන්නේ නැත.NFTs සමපේක්ෂන වත්කමක් ලෙස භාවිතා කර ඇති අතර, බ්ලොක්චේන් ගනුදෙනු වලංගු කිරීම හා සම්බන්ධ බලශක්ති පිරිවැය සහ කාබන් පියසටහන් මෙන්ම කලා වංචාවලදී ඒවා නිතර භාවිතා කිරීම සඳහා වැඩි විවේචන එල්ල කර ඇත.

උදාහරණයක් ලෙස, ඔබ සහ මා දෙදෙනාටම බිට්කොයින් 1ක් තිබේ නම් සහ ඔබ එය මගේ බිට්කොයින් සමඟ හුවමාරු කර ගන්නේ නම්, ගනුදෙනුව අවසානයේ ශුද්ධ වෙනස ශුන්‍ය වේ. නමුත් ඔබට NFT හුවමාරු කළ නොහැක. එය 2B පැන්සලක් සමඟ Van Gogh එකක් හුවමාරු කිරීමට උත්සාහ කිරීමක් වැනි වනු ඇත.


NFTs ඇත්ත වශයෙන්ම ඩිජිටල් ඕනෑම දෙයක් විය හැකිය (චිත්‍ර, සංගීතය, ඔබේ මොළය බාගත කර AI බවට පත් කිරීම වැනි), නමුත් වර්තමාන උද්දීපනය බොහෝමයක් ඩිජිටල් කලාව විකිණීම සඳහා තාක්‍ෂණය භාවිතා කිරීමයි. කලාව, සංගීතය, ක්‍රීඩා සහ වෙනත් ජනප්‍රිය විනෝදාස්වාදයේ ඩිජිටල් වත්කම් වෙළඳ භාණ්ඩ බවට පත් කිරීමට NFT දැන් භාවිතා වේ. බොහෝ NFTs Ethereum blockchain හි කොටසකි; කෙසේ වෙතත්, අනෙකුත් blockchains ඔවුන්ගේම NFT අනුවාද ක්රියාත්මක කළ හැක.


NFT හි පුනරාවර්තන රාජකීය ක්‍රියාකාරීත්වය ගැන අපි ඇත්තෙන්ම සතුටු වෙමු. ඒ කියන්නේ ඔරිජිනල් කලාකරුවාට NFT අයිති නැති වුනාට පස්සෙත් කොමිස් මුදලක් ලැබෙනවා. මෙය විප්ලවවාදී ය.



මොනාලිසා ගත්තොත් ඒකේ නියම වටිනාකම තියෙන්නේ වංශකතාවේ. Leonardo da Vinci විසින් කරන ලද මුල් කලාව ලෙස ඔබට එය සත්‍යාපනය කළ හැකි බව. ඒ හා සමානව, NFT හි වටිනාකම සත්‍යාපනය තුළ පවතී. එය අනුරුවක් විකිණීමෙන් වැළකී මුල් කලාකරුවා සත්‍යාපනය කරයි.



2020 දී NFT වෙළඳපල තුන් ගුණයකින් වැඩි විය. Beeple නමින් හැඳින්වෙන කලාකරුවා විසින් "Everydays - The First 5000 Days" නම් වූ ඩිජිටල් කලා කෘති, 2021 දී ඇමෙරිකානු ඩොලර් මිලියන 69.3 කට අලෙවි වූ අතර තවත් බොහෝ දේ අධික මුදලකට වෙන්දේසි විය.

Tuesday, January 18, 2022

Cloud computing advantages | Capex- OpEx

 There are several advantages that a cloud environment has over a physical environment that Tailwind Traders can use following its migration to Azure.

  • High availability: Depending on the service-level agreement (SLA) that you choose, your cloud-based apps can provide a continuous user experience with no apparent downtime, even when things go wrong.

  • Scalability: Apps in the cloud can scale vertically and horizontally:

    • Scale vertically to increase compute capacity by adding RAM or CPUs to a virtual machine.
    • Scaling horizontally increases compute capacity by adding instances of resources, such as adding VMs to the configuration.
  • Elasticity: You can configure cloud-based apps to take advantage of autoscaling, so your apps always have the resources they need.

  • Agility: Deploy and configure cloud-based resources quickly as your app requirements change.

  • Geo-distribution: You can deploy apps and data to regional datacenters around the globe, thereby ensuring that your customers always have the best performance in their region.

  • Disaster recovery: By taking advantage of cloud-based backup services, data replication, and geo-distribution, you can deploy your apps with the confidence that comes from knowing that your data is safe in the event of disaster.

Capital expenses vs. operating expenses

There are two different types of expenses that you should consider:

  • Capital Expenditure (CapEx) is the up-front spending of money on physical infrastructure, and then deducting that up-front expense over time. The up-front cost from CapEx has a value that reduces over time.
  • Operational Expenditure (OpEx) is spending money on services or products now, and being billed for them now. You can deduct this expense in the same year you spend it. There is no up-front cost, as you pay for a service or product as you use it.

In other words, when Tailwind Traders owns its infrastructure, it buys equipment that goes onto its balance sheets as assets. Because a capital investment was made, accountants categorize this transaction as a CapEx. Over time, to account for the assets' limited useful lifespan, assets are depreciated or amortized.

Cloud services, on the other hand, are categorized as an OpEx, because of their consumption model. There's no asset for Tailwind Traders to amortize, and its cloud service provider (Azure) manages the costs that are associated with the purchase and lifespan of the physical equipment. As a result, OpEx has a direct impact on net profit, taxable income, and the associated expenses on the balance sheet.

To summarize, CapEx requires significant up-front financial costs, as well as ongoing maintenance and support expenditures. By contrast, OpEx is a consumption-based model, so Tailwind Traders is only responsible for the cost of the computing resources that it uses.

Cloud computing is a consumption-based model

Cloud service providers operate on a consumption-based model, which means that end users only pay for the resources that they use. Whatever they use is what they pay for.

A consumption-based model has many benefits, including:

  • No upfront costs.
  • No need to purchase and manage costly infrastructure that users might not use to its fullest.
  • The ability to pay for additional resources when they are needed.
  • The ability to stop paying for resources that are no longer needed.

Cloud service models



Let's compare the three models in more detail in the following sections.

IaaS

IaaS is the most flexible category of cloud services. It aims to give you complete control over the hardware that runs your application. Instead of buying hardware, with IaaS, you rent it.

Advantages

No CapEx. Users have no up-front costs.

Agility. Applications can be made accessible quickly, and deprovisioned whenever needed.

Management. The shared responsibility model applies; the user manages and maintains the services they have provisioned, and the cloud provider manages and maintains the cloud infrastructure.

Consumption-based model. Organizations pay only for what they use and operate under an Operational Expenditure (OpEx) model.

Skills. No deep technical skills are required to deploy, use, and gain the benefits of a public cloud. Organizations can use the skills and expertise of the cloud provider to ensure workloads are secure, safe, and highly available.

Cloud benefits. Organizations can use the skills and expertise of the cloud provider to ensure workloads are made secure and highly available.

Flexibility. IaaS is the most flexible cloud service because you have control to configure and manage the hardware running your application.

PaaS

PaaS provides the same benefits and considerations as IaaS, but there are some additional benefits to be aware of.

Advantages

No CapEx. Users have no up-front costs.

Agility. PaaS is more agile than IaaS, and users don't need to configure servers for running applications.

Consumption-based model. Users pay only for what they use, and operate under an OpEx model.

Skills. No deep technical skills are required to deploy, use, and gain the benefits of PaaS.

Cloud benefits. Users can take advantage of the skills and expertise of the cloud provider to ensure that their workloads are made secure and highly available. In addition, users can gain access to more cutting-edge development tools. They can then apply these tools across an application's lifecycle.

Productivity. Users can focus on application development only, because the cloud provider handles all platform management. Working with distributed teams as services is easier because the platform is accessed over the internet. You can make the platform available globally more easily.

Disadvantage

Platform limitations. There can be some limitations to a cloud platform that might affect how an application runs. When you're evaluating which PaaS platform is best suited for a workload, be sure to consider any limitations in this area.

SaaS

SaaS is software that's centrally hosted and managed for you and your users or customers. Usually one version of the application is used for all customers, and it's licensed through a monthly or annual subscription.

SaaS provides the same benefits as IaaS, but again there are some additional benefits to be aware of too.

Advantages

No CapEx. Users have no up-front costs.

Agility. Users can provide staff with access to the latest software quickly and easily.

Pay-as-you-go pricing model. Users pay for the software they use on a subscription model, typically monthly or yearly, regardless of how much they use the software.

Skills. No deep technical skills are required to deploy, use, and gain the benefits of SaaS.

Flexibility. Users can access the same application data from anywhere.

Disadvantage

Software limitations. There can be some limitations to a software application that might affect how users work. Because you're using as-is software, you don't have direct control of features. When you're evaluating which SaaS platform is best suited for a workload, be sure to consider any business needs and software limitations.



Tour of Azure services

 Tour of Azure services:  Azure can help you tackle tough business challenges. You bring your requirements, creativity, and favorite software development tools. Azure brings a massive global infrastructure that's always available for you to build your applications on.


The most commonly used categories:
  • Compute         
  • Web
  • Internet of Things (IoT)
  • Big data
  • AI
  • DevOps
  • Networking
  • Storage
  • Mobile
  • Databases

Compute

Compute services are often one of the primary reasons why companies move to the Azure platform. Azure provides a range of options for hosting applications and services. Here are some examples of compute services in Azure.

Service name                                      Service function

Azure Virtual Machines

Windows or Linux virtual machines (VMs) hosted in Azure.

Azure Virtual Machine Scale Sets

Scaling for Windows or Linux VMs hosted in Azure.

Azure Kubernetes Service

Cluster management for VMs that run containerized services.

Azure Service Fabric

Distributed systems platform that runs in Azure or on-premises.

Azure Batch

Managed service for parallel and high-performance computing applications.

Azure Container Instances

Containerized apps run on Azure without provisioning servers or VMs.

Azure Functions

An event-driven, serverless compute service.

Networking

Linking compute resources and providing access to applications is the key function of Azure networking. Networking functionality in Azure includes a range of options to connect the outside world to services and features in the global Azure datacenters.

Here are some examples of networking services in Azure.

Service name

Service function

Azure Virtual Network

Connects VMs to incoming virtual private network (VPN) connections.

Azure Load Balancer

Balances inbound and outbound connections to applications or service endpoints.

Azure Application Gateway

Optimizes app server farm delivery while increasing application security.

Azure VPN Gateway

Accesses Azure Virtual Networks through high-performance VPN gateways.

Azure DNS

Provides ultra-fast DNS responses and ultra-high domain availability.

Azure Content Delivery Network

Delivers high-bandwidth content to customers globally.

Azure DDoS Protection

Protects Azure-hosted applications from distributed denial of service (DDOS) attacks.

Azure Traffic Manager

Distributes network traffic across Azure regions worldwide.

Azure ExpressRoute

Connects to Azure over high-bandwidth dedicated secure connections.

Azure Network Watcher

Monitors and diagnoses network issues by using scenario-based analysis.

Azure Firewall

Implements high-security, high-availability firewall with unlimited scalability.

Azure Virtual WAN

Creates a unified wide area network (WAN) that connects local and remote sites.

Storage

Azure provides four main types of storage services.

Service name

Service function

Azure Blob storage

Storage service for very large objects, such as video files or bitmaps.

Azure File storage

File shares that can be accessed and managed like a file server.

Azure Queue storage

A data store for queuing and reliably delivering messages between applications.

Azure Table storage

Table storage is a service that stores non-relational structured data (also known as structured NoSQL data) in the cloud, providing a key/attribute store with a schemaless design.

These services all share several common characteristics:

  • Durable and highly available with redundancy and replication.
  • Secure through automatic encryption and role-based access control.
  • Scalable with virtually unlimited storage.
  • Managed, handling maintenance and any critical problems for you.
  • Accessible from anywhere in the world over HTTP or HTTPS.

Mobile

With Azure, developers can create mobile back-end services for iOS, Android, and Windows apps quickly and easily. Features that used to take time and increase project risks, such as adding corporate sign-in and then connecting to on-premises resources such as SAP, Oracle, SQL Server, and SharePoint, are now simple to include.

Other features of this service include:

  • Offline data synchronization.
  • Connectivity to on-premises data.
  • Broadcasting push notifications.
  • Autoscaling to match business needs.

Databases

Azure provides multiple database services to store a wide variety of data types and volumes. And with global connectivity, this data is available to users instantly.

Service name

Service function

Azure Cosmos DB

Globally distributed database that supports NoSQL options.

Azure SQL Database

Fully managed relational database with auto-scale, integral intelligence, and robust security.

Azure Database for MySQL

Fully managed and scalable MySQL relational database with high availability and security.

Azure Database for PostgreSQL

Fully managed and scalable PostgreSQL relational database with high availability and security.

SQL Server on Azure Virtual Machines

Service that hosts enterprise SQL Server apps in the cloud.

Azure Synapse Analytics

Fully managed data warehouse with integral security at every level of scale at no extra cost.

Azure Database Migration Service

Service that migrates databases to the cloud with no application code changes.

Azure Cache for Redis

Fully managed service caches frequently used and static data to reduce data and application latency.

Azure Database for MariaDB

Fully managed and scalable MariaDB relational database with high availability and security.

Web

Having a great web experience is critical in today's business world. Azure includes first-class support to build and host web apps and HTTP-based web services. The following Azure services are focused on web hosting.

Service name

Description

Azure App Service

Quickly create powerful cloud web-based apps.

Azure Notification Hubs

Send push notifications to any platform from any back end.

Azure API Management

Publish APIs to developers, partners, and employees securely and at scale.

Azure Cognitive Search

Deploy this fully managed search as a service.

Web Apps feature of Azure App Service

Create and deploy mission-critical web apps at scale.

Azure SignalR Service

Add real-time web functionalities easily.

IoT

People are able to access more information than ever before. Personal digital assistants led to smartphones, and now there are smart watches, smart thermostats, and even smart refrigerators. Personal computers used to be the norm. Now the internet allows any item that's online-capable to access valuable information. This ability for devices to garner and then relay information for data analysis is referred to as IoT.

Many services can assist and drive end-to-end solutions for IoT on Azure.

Service name

Description

IoT Central

Fully managed global IoT software as a service (SaaS) solution that makes it easy to connect, monitor, and manage IoT assets at scale.

Azure IoT Hub

Messaging hub that provides secure communications between and monitoring of millions of IoT devices.

IoT Edge

Fully managed service that allows data analysis models to be pushed directly onto IoT devices, which allows them to react quickly to state changes without needing to consult cloud-based AI models.

Big data

Data comes in all formats and sizes. When we talk about big data, we're referring to large volumes of data. Data from weather systems, communications systems, genomic research, imaging platforms, and many other scenarios generate hundreds of gigabytes of data. This amount of data makes it hard to analyze and make decisions. It's often so large that traditional forms of processing and analysis are no longer appropriate.

Open-source cluster technologies have been developed to deal with these large data sets. Azure supports a broad range of technologies and services to provide big data and analytic solutions.

Service name

Description

Azure Synapse Analytics

Run analytics at a massive scale by using a cloud-based enterprise data warehouse that takes advantage of massively parallel processing to run complex queries quickly across petabytes of data.

Azure HDInsight

Process massive amounts of data with managed clusters of Hadoop clusters in the cloud.

Azure Databricks

Integrate this collaborative Apache Spark-based analytics service with other big data services in Azure.

AI

AI, in the context of cloud computing, is based around a broad range of services, the core of which is machine learning. Machine learning is a data science technique that allows computers to use existing data to forecast future behaviors, outcomes, and trends. Using machine learning, computers learn without being explicitly programmed.

Forecasts or predictions from machine learning can make apps and devices smarter. For example, when you shop online, machine learning helps recommend other products you might like based on what you've purchased. Or when your credit card is swiped, machine learning compares the transaction to a database of transactions and helps detect fraud. And when your robot vacuum cleaner vacuums a room, machine learning helps it decide whether the job is done.

Here are some of the most common AI and machine learning service types in Azure.

Service name

Description

Azure Machine Learning Service

Cloud-based environment you can use to develop, train, test, deploy, manage, and track machine learning models. It can auto-generate a model and auto-tune it for you. It will let you start training on your local machine, and then scale out to the cloud.

Azure ML Studio

Collaborative visual workspace where you can build, test, and deploy machine learning solutions by using prebuilt machine learning algorithms and data-handling modules.

A closely related set of products are the cognitive services. You can use these prebuilt APIs in your applications to solve complex problems.

Service name

Description

Vision

Use image-processing algorithms to smartly identify, caption, index, and moderate your pictures and videos.

Speech

Convert spoken audio into text, use voice for verification, or add speaker recognition to your app.

Knowledge mapping

Map complex information and data to solve tasks such as intelligent recommendations and semantic search.

Bing Search

Add Bing Search APIs to your apps and harness the ability to comb billions of webpages, images, videos, and news with a single API call.

Natural Language processing

Allow your apps to process natural language with prebuilt scripts, evaluate sentiment, and learn how to recognize what users want.

DevOps

DevOps brings together people, processes, and technology by automating software delivery to provide continuous value to your users. With Azure DevOps, you can create build and release pipelines that provide continuous integration, delivery, and deployment for your applications. You can integrate repositories and application tests, perform application monitoring, and work with build artifacts. You can also work with and backlog items for tracking, automate infrastructure deployment, and integrate a range of third-party tools and services such as Jenkins and Chef. All of these functions and many more are closely integrated with Azure to allow for consistent, repeatable deployments for your applications to provide streamlined build and release processes.

Service name

Description

Azure DevOps

Use development collaboration tools such as high-performance pipelines, free private Git repositories, configurable Kanban boards, and extensive automated and cloud-based load testing. Formerly known as Visual Studio Team Services.

Azure DevTest Labs

Quickly create on-demand Windows and Linux environments to test or demo applications directly from deployment pipelines.

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