TechLogix, a leader in enterprise software solutions, offers a suite of integrated products for customer relationship management $($CRM$),$ financial management, and supply chain logistics$.$ The company has a loyal customer base with high retention rates due in part to superior customer service. The company$$s product suite is considered mission$-$critical and is also tightly integrated with other customer systems including accounting systems, e$-$commerce and marketing automation. Which competitive advantage does TechLogix primarily benefit from?

Economies of scale

Product differentiation

Switching costs

Network effects