When dealing with SharePoint Online, there are some limitations to consider.The most famous one is the list view threshold of 5000 elements in a list view. But there are also others. In my company, we have implemented a project workspace solution for managing projects. In essence, we create a subsite for every project in a project list. This has lead us to another potential limitation: The number of subsites per site collection.When googling the limitations of SharePoint Online, I find a page saying ......