Every organisation larger than a sole trader makes use of multiple computer applications whether they are called ERP, CRM, HCM, Accounts etc.
Unless the business has been a very rapid adopter of Cloud or only started in the Cloud era, it is likely that the organisation has a mixture of on-premise applications and cloud applications (SaaS).
Of course, cost has driven the adoption of Cloud applications part of that is the bundling of the support and enhancements into the Cloud service. Every subscriber to the Cloud service gets the same functionality although there may options to selectively tailor some aspects. As the combination of Cloud applications and on-premise software varies across businesses, there are often gaps and overlaps which need to be addressed. These “Adjustments” to the ideal position can involve functionality and data issues.