If you find yourself manually referencing information from multiple locations and consolidating it then there may be a better way. One of the big benefits of web based systems is that they can be configured to automatically integrate with other tools/services/websites that you use. This can save a lot of time and prevent human error compared with manually transcribing such information/tasks.
If you are developing a website or web application then it is possible to put in place the means for other applications to communicate with your platform. This can enable people who rely on your service to do their own integration work within your system. By enabling this sort of functionality you are potentially creating a unique selling point compared to other solutions in the market.