Yes, ISO 20000 certification for internet data center is good idea.
Here are few benefits of the ISO 20000 implementation (and certification):
- proof of excellence in IT Service Management (ITSM)
- getting ITSM “under control” – meaning managed, measured and improved processes, clear roles&responsibilities, etc.
- distinctiveness from other, non ISO 20000 certified, companies
- integration of ITSM and business operation as well as stakeholders (and their expectations)
- “same language” inside organization
You can find out more in the article “5 key benefits of ISO 20000 implementation” https://advisera.com/20000academy/blog/2016/02/09/5-key-benefits-of-iso-20000-implementation/