From Web 2.0 to Web3: the internet as you knew it is going to change forever

The Internet is reinventing itself. If Web 1.0 was the static showcase of information and Web 2.0 brought the era of social networks and mass participation, Web3 represents the leap towards a decentralized network, where users not only consume content, but also own their data, assets and digital reputation. It is a profound change in the technical, economic and social structure of the network, redefining concepts such as ownership, identity and trust.

Today, millions of users interact with centralized platforms that manage their data, transactions and digital relationships. But this centralisation, which enabled the expansion of the internet, has also brought dependency, lack of transparency and loss of control over digital identity. Web3 proposes a new contract between technology and society: an Internet governed by its users, built on open infrastructures and with individual sovereignty by design.

Data control: from centralized custodianship to digital sovereignty

The most visible difference between the two stages of the Internet lies in data management.

In Web 2.0, users hand over their information to centralized platforms (Google, Meta, Amazon, etc.), which process, store and monetize it. Every time we open an account, we leave our identity and our habits in the hands of third parties.

On Web3, this logic is reversed. Thanks to technologies such as blockchain and verifiable credentials, data is no longer locked up on private servers but is managed directly by its owners. Each user can decide what information they share, with whom and under what conditions, using cryptographic mechanisms that guarantee authenticity without revealing more than necessary.

This model not only better protects privacy, but also changes the rules of digital trust: verification is no longer performed by a central platform, but by a decentralized network that validates data in an open and secure way.

Business model: data economy vs user economy

The success of Web 2.0 was built on a model in which personal data became the main asset. Centralized platforms offered free services in exchange for information that was then monetizsed through advertising and recommendation algorithms, concentrating power and profits in a few hands.

Web3 proposes a paradigm shift from a data-driven economy to a user-driven economy. In this new environment, value is shared among those who actually contribute to the network. Tools such as tokens, NFTs or smart contracts allow direct rewards for participation and value contribution in communities or projects. It is the birth of a fairer and more decentralized economy, where the user becomes a co-protagonist and, in many cases, a "digital shareholder" of the platforms they use.

A good example of this model is the DAOs (Decentralized Autonomous Organizations), which replace traditional hierarchical structures with collective governance systems. Within these organisations, each token gives the right to vote and decisions are made transparently, according to the will of the community.

Governance and participation: from passive user to co-producer

On Web 2.0, users were content producers, but without power over the rules of the game: platforms decided how data was managed, what was displayed or how it was monetized. Web3 changes that balance. Here, users not only participate in, but also co-govern the digital spaces in which they operate.

Through decentralized governance systems, Web3 projects function as true living ecosystems, where updates, fund management or new functionalities are decided by open and blockchain-recorded voting. This model promotes transparency, co-responsibility and active participation, pillars of a more democratic and collaborative digital economy.

Behind the concept of Web3 is a set of technologies that work in layers, forming a common architecture oriented towards trust, interoperability and decentralization.

Infrastructure: blockchain, smart contracts and oracles

Blockchain is the basis of everything. It is a distributed register where each block contains verifiable information cryptographically linked to the previous one. This structure ensures that, once consensus is reached, the data cannot be altered.

Smart contracts, self-executing programs that automate agreements between parties without the need for intermediaries, operate on this basis. This opens the door to a myriad of applications: from automated payments to voting systems, traceability or identity management.

Oracles, on the other hand, are in charge of connecting the real world with blockchain. They provide external data (such as prices, weather or results) so that smart contracts can act on verified information. Without them, the Web3 ecosystem would be isolated from the physical and economic environment.

In addition, more advanced infrastructures are emerging, such as public-permissioned networks, which combine the transparency and traceability of open systems with the governance and compliance needed in business and administrative environments.

In Spain, this approach is embodied in the Infraestructura de Servicios Blockchain de España (ISBE) (Spanish Blockchain Services Infrastructure), currently under development. ISBE will be a set of interoperable networks that will allow public administrations and businesses to collaborate in a common space, simplifying processes and ensuring regulatory compliance and legal validity of digital services.

Access and sovereignty: sovereign wallets and credentials

On Web3, the digital wallet becomes the gateway to the new Internet. It stores not only cryptocurrencies, but also identities, permissions and digital certificates. Each user has their own "digital passport" from which they can interact with applications, sign transactions or verify information.

Self-Sovereign Identities (SSI) reinforce this model by allowing individuals to manage and share their identity information without relying on intermediaries. Based on decentralized identifiers and verifiable credentials, they guarantee authenticity and privacy while giving the user full control over their data: they decide when and with whom they share it.

All of this under the framework of the eIDAS2 Regulation, which promotes a more secure, interoperable and citizen-centric digital identity system in Europe. Thus, a citizen can prove their qualifications or residency without sharing unnecessary personal data, while a company validates these attributes instantly.

This model of sovereign digital identity represents one of the biggest cultural shifts in the history of the Internet: privacy and control are no longer concessions but rights embedded in the design of the system.

Applications: DApps, NFTs, DAOs and digital voting

DApps (decentralized applications) are the Web3 equivalent of mobile apps or traditional platforms, but without intermediaries. They run on blockchain, which guarantees transparency and resistance to censorship.

NFTs (non-fungible tokens) go far beyond digital art: they are already used to accredit academic certifications, property titles and professional licenses. At the institutional level, they allow for more secure and verifiable record-keeping systems.

DAOs, mentioned above, are digital communities that operate autonomously, with rules predefined by smart contracts. They represent a new, more transparent and collaborative form of organization.

Verifiable digital voting is also gaining ground and can be applied to citizen consultations or internal company processes, guaranteeing integrity and anonymity without intermediaries.

Together, these tools build an Internet where digital interaction has legal, economic and social value.

Institutional initiatives

Europe has understood that digital sovereignty is a strategic issue. The European Blockchain Services Infrastructure (EBSI), promoted by the European Commission, aims to create a common network of public services based on blockchain, ensuring interoperability and cross-border trust.

In Spain, this path is reinforced with ISBE. Conceived as a national infrastructure driven by the Community of Madrid and Alastria, ISBE aims to become the technological base that connects innovation with regulation, reinforcing the country's digital sovereignty and competitiveness within the European framework, integrating regulatory compliance by design (GDPR, eIDAS2, NIS2, MiCA, DORA, etc.).

In addition, RETECH projects support the deployment of regional technology infrastructures to foster decentralized innovation. These programs, financed by European funds, promote a balanced take-up of Web3 across the territory.

With these initiatives, Europe is not only regulating, but also building its own digital model based on trust, transparency and legal compliance.

Featured startups and Web3 projects

The Spanish entrepreneurial ecosystem is demonstrating a remarkable capacity to take advantage of Web3 opportunities. Startups such as Cryptan and Bit2Me are leading the way in the financial sphere, facilitating regulated access to digital assets. Aragon, for its part, is a world pioneer in decentralized governance, providing tools to create DAOs in a simple and secure way.

Other projects such as Talent Protocol are exploring new models of professional reputation and financing through tokens, while technology companies and national consultancy companies experiment with verifiable digital identities, tokenization of real estate assets or sustainable traceability systems in supply chains.

These initiatives show that Web3 is not a future promise, but an expanding reality that already generates economic and social value.

The move towards Web3 will not only be technical, but also cultural and regulatory. Europe, aware of the risk of technological dependence on powers such as the US or China, is committed to a model based on open infrastructures, common standards and regulatory compliance.

Regulations such as MiCA (Markets in Crypto Assets), DORA (Digital Operational Resilience Act), the Data Act and the new eIDAS2 establish a clear framework to ensure that innovation moves forward in a secure and legally valid way. In this context, projects such as ISBE and EBSI function as key pieces of European digital sovereignty.

These infrastructures not only enable new services, but also create an environment of trust in which businesses, citizens and administrations can interact with guarantees, reducing costs and barriers.

Web3 represents the next logical step in the evolution of the Internet: an environment where trust is in the code, identity belongs to the user and transparency replaces intermediation.