Like the MERN stack and MEAN stack, the BERN stack combines four technologies: Blockchain, Ethereum, React JS, and  Node JS. It is useful to build blockchain dApps and solutions. To understand the BERN stack, let us dive into each of the technological components: 

Blockchain is a distributed, decentralized, immutable ledger that can record data and track transactions and assets. True to its name, the blockchain exists as data blocks that record valuable information. Now imagine these blocks connected to each other. With each data transfer, the blockchain builds itself while recording the time and sequential order of the transaction. Because of this, all data modifications to the blockchain will be visible to all network participants. With the magic of smart contracts, the terms of the transactions will be executed automatically. This means cutting out a central mediator and minimizing the error margin significantly. 

This technology helps industries tackle data management and transparency problems. Notably, supply chain management, health care systems, the retail industry, the finance industry, the insurance industry, the real estate industry, and the telecommunication industry can benefit.

Ethereum is a blockchain-based decentralized network platform that facilitates the development of Dapps and global payment. Transactions like gas fees and other value-based exchanges within the Ethereum network are enabled through Ether (ETH).  Ethereum functions on the backbone of self-executing agreements called Smart Contracts coded with Solidity language. This language also powers Ethereum Virtual Machine (EVM). The EVM, in turn, is responsible for supporting functions like Decentralized Apps (dApps), Decentralized Finance (DeFi), and Decentralized Autonomous Organizations (DAO). Ethereum hopes to improve the network and make it more scalable, secure, and sustainable. This is done with Ethereum’s Layer 2, Beacon Chain, and the Proof-of-Stake system. 

 ReactJS is an open-source front-end JavaScript library used to create user interfaces. It is a declarative compound-based flexible library maintained by Facebook. React would make updates and render the perfect components based on data changes to make the code more predictable and easier to debug. Since react uses Javascript virtual DOM, it improves the app’s performance and speeds better than when using a regular DOM. Being component-based means that it also helps maintain larger applications. How? These components can be nested together to increase the app’s complexity but from the same simple fundamental components. 

Some of the most well-known users of React JS are Facebook, Instagram, Whatsapp, Netflix, Discord, and Khan Academy. With the new React v18, developers can access concurrent rendering that allows multiple interface versions to be prepared simultaneously. 

Node JS is an open-source javascript runtime environment. Node, therefore, is a platform that can execute the code for applications. Node is used to build the backend services. Node JS brings better performance into the picture with its speed and high scalability. Since Node runs on the V8 Javascript engine created by Google, it can quickly handle operations like reading and writing in the database, net connection, or file system. Since the front end is built using Javascript, the developers don’t have to switch between languages while creating the back end. 

Node JS is most suited for developing real-time chat applications, collaboration tools, streaming applications, JSON APIs-based applications, and Complex single-page applications. Moreover, since some of its well-known users are Microsoft, Walmart,  Yahoo, and Paypal, these companies tend to bring their front-end and back-end developers into one unit. This provides some extra corporate support as well.