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Understanding Internet, Intranet & Extranet

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The Internet is a worldwide network of computers. It connects people across countries using cables, satellites, and wireless systems, enabling the real-time sharing of data, messages, videos, and services. Think of it as a vast global highway for information.

preencoded.png. Uses of the Internet. preencoded.png. 

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Online shopping, digital marketing, e-payments

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An Intranet is a private network inside a company. Unlike the Internet, it is not open to the public; only authorised staff or employees can access it. For example, a company's HR portal where employees check salary slips or announcements. It's the company's internal digital ecosystem.

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Facilitates seamless communication between staff and managers.

Allows for safe sharing of files and documents within the organisation.

Supports teamwork using tools like Google Workspace, fostering a connected workforce.

Provides a central repository for training materials and internal knowledge.

Disseminates important updates such as holidays, events, or HR news.

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An Extranet is like an extended Intranet. It securely allows selected outsiders – such as suppliers, business partners, or customers – to connect with a company’s internal systems. A common example is the Amazon Seller Portal or an Online Banking Login, where controlled external access is granted.

preencoded.png. Uses of an Extranet. Suppliers check stock and orders, ensuring efficient supply chain management.. 

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Suppliers check stock and orders, ensuring efficient supply chain management.

Business partners share project updates, enhancing collaborative workflows.

Customers use portals for services, improving customer satisfaction and self-service options.

Banks use extranets for online transactions, providing secure financial services.

Facilitates B2B communication between companies, streamlining inter-company operations.

preencoded.png. How These Work. preencoded.png. Internet. 

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Functions globally via ISPs, servers, routers, and satellites to connect the entire world.

Operates within company firewalls, granting access exclusively to employees.

Utilises VPNs, secure logins, and passwords to enable safe external partner connections.

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Global reach, open access, unlimited knowledge, fast connection.

High security, improves teamwork, controlled access.

Safe external collaboration, real-time information sharing, strong business relationships.

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