Web services are a way for different software applications to communicate with each other over the internet. They allow programs to share data and functionality, making it easier for businesses to integrate their systems. For example, a weather service can provide real-time weather data to a travel app, helping users plan their trips more effectively. These services use standard protocols like HTTP and formats like XML or JSON to exchange information. This means that developers can create applications that work together seamlessly, regardless of the programming languages or platforms they use. Overall, web services enhance collaboration and efficiency in the digital world.