Why do companies use outsourcing and gig-economy arrangements?

"Outsourcing business functions—both globally and domestically—continues to be a regular business practice for companies large and small. Companies choose to outsource either as a cost-saving measure or as a way to gain access to needed human resource talent and innovation. To be successful, outsourcing must solve a clearly articulated business problem. In addition, managers must use outsourcing providers that fit their company’s actual needs and strive to engage these providers as strategic partners for the long term. A recent phenomenon known as the gig economy has taken on more importance as it pertains to the U.S. labor force and outsourcing. More people are working as freelancers on a per-project basis, either because they can’t get hired as full-time employees or because they prefer to work as self-employed individuals. Global mergers raise important issues in organizational structure and culture. The ultimate challenge for management is to take two organizations and create a single, successful, cohesive organization."