INTRODUCTION
Hello steemians, It's another wonderful week to learn from professor @yousafharoonkhanat at the SteemitCryptoAcademy. THANK YOU very much professor for such a great lecture, keep up with the good work.

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WHAT ARE DECENTRALIZED AND CENTRALIZED EXCHANGE
Decentralized exchange may be a sort of crypto exchange that allows/permits users/traders to transfer, buy or sell Funds between each other without the necessity for any central authority or middleman while a decentralized exchange on the opposite hand is additionally a kind of exchange that grants traders/investors permission either sell or buy from one another but unlike decentralized exchange, they're governed by central authorities or private organization.

DIFFERENCE BETWEEN CENTRALIZED AND DECENTRALIZED EXCHANGES.

1. Consistent with analysis, centralized exchanges take but 9millisecond to execute orders whereas decentralized on the opposite hand takes an averagely of 15seconds to a moment to finish orders (transferring and selling of Funds) making it slower than centralized.
2. There is no verification required from authorities/third parties in decentralized exchange before completing a transaction process unlike centralized where the traders need to undergo Know Your Client(KYC) verification which is managed by its authorities before investors or traders are allowed to transfer or sell their own Funds.
3. Transaction fee is extremely low on decentralized exchange whereas centralized is quite the opposite with high transaction charges.
4. There's a middleman required in centralized exchange whilst decentralized doesn’t.
5. Decentralized exchanges are far behind in popularity as compared to the centralized crypto exchange (currently) no matter their special advantages in terms of wallet and account wise over their counterpart.
6. Centralized crypto exchanges have the sting over decentralized ones in terms of features. They trade better with the utilization of multiple advanced order types and portfolio management tools. While Decentralized their counterpart has quite limited kinds of orders and doesn’t offer margin trading (and similar features) to their customers.

BEST CENTRALIZED EXCHANGES OF 2021

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1. Binance coin(BNB) is an Ethereum blockchain cryptocurrency network used by investors/traders to trade and pay fees (trading fees) on the Binance exchange. BNB is categorized within the top 4 cryptocurrencies on the CoinMarketCap. Binance was established by Changpeng Zhao a co-member of the blockchain.info development team. It was published/launched via an Initial Coin Offering in July 2017 with an ERC-20 token, with an early supply of 200 million coins in a total of which the ICO was offered one-half of the initial supply and has since become the world’s biggest and notable cryptocurrency exchange since 2018 with a very high processing speed to hold out transactions (over 1.3 million transactions per second). Binance coin investors gain a reduction in exchange fees on the Binance crypto exchange and can be exchanged for either Bitcoin, Litecoin, etc. whenever the investor chooses to.

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1. Poloniex is a cryptocurrency exchange that permits/allows its investors to buy and sell digital assets, such as Bitcoin (BTC), TRON (TRX), and other altcoins. The exchange guarantees/assures that users experience safety and security while transacting. As such, Poloniex also makes sure that the overwhelming majority of customer/trader's deposits are stored/saved offline in air-gapped cold storage. This reduces the risk rate and exposure to intruders/hackers and other online threats.

HOW TO INSTALL METAMASK

1. Firstly, you would need to open any browser of your choice and search for METAMASK. As shown in the picture below

Click to sign up now.

1. Click on download now to install MetaMask into your device and also install and add to chrome as in the below pictures.

1. Click on get started to begin the sign up process

1. Select create a wallet and agree their with their terms and conditions

1. Create a user password with at least 8 characters long , download and save your secret backup phrase for future use.

1. Click on confirm to confirm your secret backup phrase.

6.Everything is set, you can start swapping now

HOW TO USE UNISWAP EXCHANGE , AND SWAP/BUY OR SWAP/SELL ANY COIN

1. Go to http://uniswap.org start using UNISWAP .

1. Click on connect to wallet.

1. Select a wallet of your choice to start swapping as shown in the pictures below

1. Input amount
   

CONCLUSION
Decentralized exchange has its advantages just like Centralized exchange and they both have their cons as well. I'm glad i took part in this lecture because it gave me the prospect to research more about both exchanges.

Watch the above video to know more about the difference between centralized and decentralized exchanges
THANK YOU
Cc: @yousafharoonkhan
Cc: @steemcurator02