Maturity in ISO evaluation

When it comes to a system, if the system is already been used for example in 5 years and it has already a lot of records, it means that the system can adopt to any updates and changes if necessary to handle more records for another years of service. Am i right? Hnmmm.. or wrong.

Answer: I'm assuming in your example you meant "adapt" instead of "adopt".

Considering that, and the information in the article you've mentioned, a mature ISO system is one that can continuously improve, by means of corrective actions or by taking advantage of opportunities, and provide information to both evidence such improvements and support top management decision making in business issues (e.g. through results of key performance indicators).

These articles will provide you further explanation about continual improvement:
- Practical use of corrective actions for ISO 27001 and ISO 22301 https://advisera.com/27001academy/blog/2013/12/09/practical-use-of-corrective-actions-for-iso-27001-and-iso-22301/
- Ke y performance indicators for an ISO 27001 ISMS https://advisera.com/27001academy/blog/2016/02/01/key-performance-indicators-for-an-iso-27001-isms/