Software scalability refers to an application's ability to maintain or improve performance as demand increases, whether that's supporting more users, processing higher volumes of data, or handling more transactions. Building scalable software is crucial for business growth and customer experience, as it enables companies to adapt to changing demand, innovate, and elevate the employee experience. To achieve scalability, developers can use microservices, leverage cloud architecture, optimize performance behind the scenes, scale database performance, build resilient systems, and keep security and compliance in step with scale. Additionally, investing in integration observability software and using a unified API solution can help manage and scale customer-facing integrations successfully. By implementing these strategies, companies can prevent issues such as slow data syncing and high error rates during peak usage periods, and instead, build a software product that grows sustainably and efficiently.