Virtual Machines are the engine of blockchain technology.

The function of Virtual Machine.

Virtual machines (VM) are components that exist within the hardware and software of a computer, used for the deployment of programs in operating systems, which has various advantages, such as the ability to flexibly deploy applications on another, launch servers, secure, run, and store digital programs, therefore, are the foundation of blockchain technology. 

The equality of a blockchain is bent on its virtual machine capabilities, as it serves the rules of the program, like Smart Contracts, and other decentralized applications built on them, using various programming languages such as Solidity, C++, C, Rust, or python.

The Ethereum Virtual Machine(EVM) is currently the most used blockchain Virtual Machine, in which the Ethereum-based programming language, “Solidity”, is used for building smart contracts, Validating Nodes, and securing the network.

Due to the technical qualities and security, the solidity language is normally used in other protocols, these blockchains combine the solidity program with other programming languages, using an Integrated Development Environment (IDE) while running on (EVM) to create more scalable and gas-efficient products, they are therefore regarded as (EVM) -compatible blockchains.

How does this work?

The code translator.

The Solidity language is Ethereum-base which needs to be obtained and translated using a technological process known as “bytecode”, which converts code for other computer processors to understand, the bytecode software translates Solidity on EVM, thereby turning it into Ethereum Optional Codes(aka “Opcode”) for the deployed Smart contracts to understand, in accordance to this, the EVM requires a percentage of payment which is regarded as a gas transaction.

Why gas fees?

Every blockchain transaction requires gas to be offered for the operational nodes that comprise multiple mathematical algorithms on a virtual machine, therefore the fees generate complex code that secures the network from being easily reprogrammed by (DDoS) attackers or any other.

Why Is the Ethereum Gas higher

The Ethereum Opcode requires 21,000 gas bytes for every transaction requested, and an additional cost is paid to the operational node if the memory is expanded, when the network is congested the operational memory gas bytes go uncontrollably high, but if gas prepaid for the transaction is not consumed due to price movement the fund is returned. The Ethereum validators and miners are compensated during this process for monitoring the EVM is a quasi-Turing Complete by the computational process.

An EVM-Compatible 

EVM-Compatible blockchain developers, for example, Avalanche, Matic, BSC, or Harmony, develops a computational mechanism using Ethereum virtual machine for fast scaling solution due to its secured network, this requires a complex mathematical prototype deployment to be achieved. 

The Solidity smart contracts code on Ethereum is preferred for developers to build smart contracts and merge EVM-compatible blockchain in other to create cross-chain dApps running on EVM Opcode programs, as often seen on projects in the space.

Also, most of the layer 2 protocols are EVM-compatible for example the Optimistic rollup, zk-rollup, etc, they are called roll-ups’ due to their unique built program which scales Ethereum.

there are other blockchain networks with good VM solutions and fast transaction finality, the Ethereum blockchain is more popular due to its wide range of decentralized applications.