The planning department mainly engages in various investments and M&A business for the company, for example, acquiring a competitor, for example, where to open a branch. It also has the significance of company development planning and layout, but it is not as macro as the strategy department.
Management consulting companies provide management guidance for other companies. For example, enterprises don't know what to do when facing difficulties in business growth. At this time, the management consulting company can provide diagnosis and output solutions, which is equivalent to finding foreign aid for the leadership.