Most people use the internet every day without thinking about how it works. We open websites, send emails, and join online meetings, and everything seems to happen in just a few seconds. Behind all of this is the public internet, a shared network that helps people and businesses stay connected around the world.
For businesses, understanding the basics can be very helpful. As your company grows, you may need better ways to stay connected and support your daily work. By learning how the internet works, it becomes easier to understand your options and choose what works best for your business. In this article, we will explain it in a simple and easy-to-follow way.
What is the public internet?
The public internet is a global network that anyone can access through a standard internet connection. It is not owned by a single company or government. Instead, it is made up of thousands of networks operated by telecom providers, internet service providers, and technology companies around the world.
These networks are connected through a shared set of technical rules. Because they follow the same standards, they can communicate with each other and exchange data smoothly. As a result, information can move across different networks without issues. This is what allows people, businesses, and devices around the world to connect and share information through the internet every day.
Because of that open structure, a team in Jakarta can open a file sitting on a server in Amsterdam through the public internet. Likewise, a business in Bangkok can run a video call with a partner in Singapore without any special setup. That kind of reach is possible because every network follows the same basic standards.
What actually travels across the public internet?
The public internet carries a very large and growing amount of data every single day. According to the Cloudflare Radar 2025 Year in Review, global internet traffic grew by 19% in 2025 alone, continuing a multi-year upward trend. Here is a look at the main types of traffic moving through it:
- Web traffic: Every page visit, image load, and app request travels between a user’s device and a server somewhere in the world.
- Email and business messaging: Most business emails and chat messages pass through several networks before arriving at their destination.
- Cloud services: Accessing files, running software, or using platforms hosted in the cloud almost always needs a stable internet connection. Businesses rely on this every day.
- Streaming and video calls: Meetings, broadcasts, and media platforms need to deliver content in close to real time. Any slowdown in the network shows up straight away.
- API and data exchanges: Software systems that talk to each other, such as payment tools, logistics platforms, and customer management software, pass data back and forth all the time.
Each of these shows how much of daily business life depends on this shared network running in the background.
How does data actually move through it?
Data travels in small units called packets, not as one whole piece. Each packet finds its own path through a chain of routers and networks, then gets put back together at the other end. This happens on its own, usually within milliseconds. Each packet can take a different path based on network traffic, outages, or how network operators set up the routes.
For most business tasks, that works well. For work that needs tighter, more stable performance, like financial platforms or live systems, companies often move those tasks onto private or dedicated network paths that run alongside the public internet.
Why does fiber infrastructure matter?
Fiber infrastructure is important because it is the base of an internet connection. It is the physical network that carries data to and from the public internet. Because of this, it affects how fast and stable the connection is. If the foundation is weak, the internet connection may not work well, even if the service is good.
Meanwhile, ARNet Infra provides dark fiber and network infrastructure across Southeast Asia, including Malaysia, Indonesia, Singapore, and Thailand. Their services include dark fiber, long-haul fiber, metro fiber, and last-mile fiber. As a result, these services help businesses build strong and reliable connections. In fact, many large organizations use dedicated fiber routes because they are more stable than shared connections.
As businesses use more data, a strong network becomes more important. Therefore, ARNet’s regional network helps businesses move large amounts of data smoothly and reliably. Instead of depending only on shared internet connections, businesses can use fiber infrastructure as a strong foundation for their network. This helps support daily work, online services, and future growth. To learn more, explore ARNet and its solutions across the region.
About the Author
Nabila Choirunnisa, Digital Marketing Executive at ARNet
