Hello I was wondering if an individual with an AdWords Professional (Client center) can manage account for several businesses, who might target almost the same keywords, in case the companies in fact are two different companies. Best T
Yes he can manage several businesses, targeting similar keywords. Also adword professional should keep in mind he should not use the similar adcopies or else google will hurt the CTR for the coping adgroup.
Yes, because they are in separate accounts. Even if they are all managed under the same MCC. There is something to say about the ethics of it, though. I don't take on a new client if they are in competition with one of my existing clients.
You may use the exact same keywords in separate accounts within your master account. Of course you should take good care of your clients businesses, and avoid conflicting/competing campaigns between your clients.