Ultimately, the answer depends on what platform suits your brand best. Since no brand is similar to another and every brand has unique needs, deciding the platform(s) that will provide you with the most desirable outcomes takes meticulous planning.
For instance, Facebook is a great starting point for many businesses. However, some businesses may gain more benefits if they use other platforms such as Instagram. To decide the best platform for your business, analyse your audience, offerings, and business goals.