Techniques are disclosed for determining whether a computing node or a virtual machine instance executing on that computing node that is part of a web services platform is in an impaired condition or a normal condition. In embodiments, a status monitor of the web services platform obtains information about the status of the computing node or instance from multiple sources, aggregates this information to determine a cause of impairment and notifies a corresponding customer of this cause. In embodiments, the status monitor may also determine a possible remedy to this impairment and implement this remedy without customer input.