Improvement system that is best suited to solve my challenge?

Depending on the area of responsibility requires appropriate methods:

For a CEO or business manager it is important to deal appropriately with the cost pressure from the market.
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For marketing, sales and development of a successful operation it is crucial to keep launching new and innovative products on the market.  --> more

For planning, controlling, purchase and logistics the task is to provide the prerequisites for a profitable production to secure the daily production.  --> more

For the production the challenge is and has always been to produce goods profitably regarding the quality and time line the customer specifies.  --> more

Regarding quality the challenge is to integrate this quality into the product right during the development stage.  --> more

Conclusion:
Now, which is the right improvement system for you?
As already mentioned, there are many systems, methods and tools.

It all depends which problem you have to resolve. If you want to solve a temporary problem, select the right method, get an expert in to solve your problem or train your own staff to develop the appropriate know-how to improve your area.

However, if you want to implement a system or a method in your area which is meant to be understood and continually applied by all staff it is getting more demanding.  In this case you not only need an expert in the relevant field but an experienced consultant who is above his specialist knowledge also capable of transferring the know-how in cooperation with the managers in your company to all employees and to implement the system and achieve the sustainable improvement you expect.