Core HR Systems Are integrated With 15 Systems On An Average

I have been studying the system landscapes of several SAP customers in the past few months. I learned that on an average a Core HR system is integrated with about 15 different vendors systems. A few weeks back I mentioned that the number of average integrations per customer is about 60.

Examples of a vendor system are

• performance management systems, 
• recruiting systems, 
• onboarding systems, 
• benefits management systems, 
• stock options management systems, 
• rewards and recognition management systems, 
• payroll systems, 
• employment and income verification systems

This is based on several customers of varying sizes. What do you think? Do you see a similar number of vendors systems integrated with Core HR systems.