The most important factor when it comes to intranet is the user experience, making sure that the UX is clean, simple and user intuitive is the easiest way to increase user adoption. It's also important that early on in the selection process that you include a representative from all the departments that are going to use this regularly e.g. HR, Marketing, Sales. These users need to have a say because there are specific function that may dissuade them form actively engaging with the solution. Enhancing the SharePoint user experience can be done in some simple ways sluggish and unfriendly intranet always results in users’ disengagement. Below are the three components that require your attention if you want to increase user adoption.