What is the difference between 'Acting as Chief Executive Officer' and 'Acting Chief Executive Offic
What is the difference between 'Acting as Chief Executive Officer' and 'Acting Chief Executive Officer'? This is in relation to office duties.
many thanks in advance fdor your ANSWERS

Question

What is the difference between 'Acting as Chief Executive Officer' and 'Acting Chief Executive Offic
What is the difference between 'Acting as Chief Executive Officer' and 'Acting Chief Executive Officer'? This is in relation to office duties. 
many thanks in advance fdor your ANSWERS

Answer

He is Acting Chief Officer, is a title, a job/role title and all words have capital letters.
John Brown is Acting Chief Officer on the ship HMS Italki.
The other is describing what a person is doing, Mary Jane is acting as Chief Executive Officer today as John Brown is not here. 
Acting in this sense is working/doing something that normally is done by someone else.

Answer

"Acting Chief Executive Officer" would be a job title, like "interim CEO".

"Acting as Chief Executive Officer" would be taking on the roles and responsibilities of the CEO, without necessarily getting the job title.