Use the internet. The first step is to search for photographers specializing in corporate and marketing photography. You should be able to find at least one or two from your local area, but you may need to widen your search if you want more options.
Ask friends, colleagues, and industry professionals. If you don’t have any luck using the internet, ask around at work, among your social circle of friends, or even ask someone who works in a field related to yours (for example: if you own a restaurant, ask someone who owns one too).
Look for photographers who specialize in corporate and marketing photography. Your goal here is not just finding out which photographer has done shoots like yours before—you also want someone who has experience with this specific type of business! For example: if they’ve shot weddings before but their portfolio only features images of clubs or restaurants then they’re probably not going to be much help when it comes out that there’s no place left where everyone can stand up straight without bumping into each other because there aren’t enough chairs/tables available respectively.”