Can you use the same domain name for your company's official website and oa

Yes, you can, as long as the domain name is re-resolved to the space address of the new website.

Office Automation (Office Automation, referred to as OA) is a modern office and computer technology combined with a new type of office. There is no uniform definition of office automation, where the traditional office in the use of a variety of new technologies, new machines, new equipment to engage in office business, are all part of the field of office automation. [1] Through the realization of office automation, or the realization of the digital office, you can optimize the existing management organizational structure, adjust the management system, on the basis of improving efficiency, increase the ability to collaborate office, strengthen the consistency of decision-making.