One of the limitations of the SaaS cloud model is that users do not have full control over the software version and roadmap of the cloud solution. This means that users have to rely on the vendor to provide updates, patches, bug fixes, and new features for the software, and they may not be able to choose when or how to implement them. Users may also face compatibility issues with other applications or services if the vendor changes the software without prior notice or consultation. Users may also have limited or no access to the underlying code or configuration of the software, which may restrict their ability to customize or optimize the software for their specific needs.