Differences Between Web 2.0 and Web 3.0 
Tags: web3, ethereum, beginners, blockchain
Published: 2022-03-02 14:56:12

## Brief Introduction
Prior to the advent of web 3.0, I have never heard of the terminology web 2.0 even though I have been a user of it until I began to follow the world of blockchain. I made my research on what web 3.0 means and it led me to know what web 2.0 is all about, including web 1.0 and the differences between them.
To know the differences between web 2.0 and web 3.0, we begin with web 2.0 a version of the internet most of us knows today, refers to the second generation of internet services which focuses on enabling users to interact with the content on the web. It is an internet dominated by companies that provide services in exchange for your personal data.

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Web 2.0 runs on a centralized network while web 3.0 runs on a decentralized network. Running on a centralized network means a 
 centralized network architecture is built around a single server that handles all the major processing. The implication of this is that Twitter for instance can censor your account or tweets just as it was done for Former U.S. President Donald Trump in the year 2021 whereas, in a decentralized network, Web 3.0 tweets would be uncensorable because control is decentralized that is a decentralized network architecture distributes workloads among several machines, instead of relying on a single central server.

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The architecture of web 2.0 is different from web 3.0. Take DEV as an example, an online community for sharing and discovering great ideas, having debates, making friends, sharing share articles, questions, discussions, etc.
As a web 2.0 application, it may look and sound simple but there is a lot that goes into _DEV's_ architecture to make it all possible.

**First**, there must be a place to store essential data, such as users' posts, discussions, tags, comments etc. This requires a constantly updated database.

**Second**, backend code (written in languages like  Ruby and Bash (_just a little bit_)) must define DEV's business logic. For example, what happens when a new user signs up, publishes a new blog, or comments on someone else’s blog?

**Third**, frontend code (typically written in JavaScript, HTML, and CSS) must define DEV's UI logic. For instance, what does the site look like, and what happens when a user interacts with each element on the page.

Putting it all together, when you write a blog post on DEV, you interact with its frontend, which talks to its backend, which talks to its database. All of this code is hosted on centralized servers and sent to users through an internet browser. This is a good high-level summary of how most Web 2.0 applications work today.
However, all of that change is due to the limitations of web 2.0 which leads us to the blockchain technology that hosts the web 3.0 applications.

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Web 3.0 leverages artificial intelligence for powering machine-to-machine interaction alongside advanced analytics. It also uses a decentralized network for passing data to the control of the owners. As a result, users get the opportunity for exerting ownership of their data alongside determining the ways in which it should be shared.

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## Basic differences between web 2.0 and web 3.0

- Web 2.0 services focuses on interactions while web 3.0 focuses on decentralization and semantic learning.

- The focus of web 2.0 is mainly on community development, while web 3.0 focuses on empowering individual users.

- Web 2.0 uses technologies such as AJAX, Python, JavaScript etc. while web 3.0 uses technologies like artificial intelligence, machine learning, decentralized protocols.

- The type of application web 2.0 uses are basically web applications while web 3.0 uses smart applications based on AI and ML.

- In the state of data, web 2.0 network owns the data, while in web 3.0, entities have ownership over the data and its sharing and use.

- Features found in web 2.0 are improved interaction and introduction of web applications, while features in web 3.0 are smart web-based applications and functionalities, the better blend of web technology and knowledge representation.

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## Final words

The highlights above have shown that web 3.0 has shown a more promising and better interaction between humans and machines. Above all web 3.0 comes with better security, trust and privacy.

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**References**

1. _https://101blockchains.com/web-2-0-and-web-3-0/_

2. _https://www.preethikasireddy.com/post/the-architecture-of-a-web-3-0-application_

3. _https://ethereum.org/en/developers/docs/web2-vs-web3/_