Creating an API-driven solution is no longer sufficient; proper documentation, code samples, and SDKs are essential to ensure a smooth user experience. Building and maintaining an SDK requires careful planning, addressing various challenges such as technology evolution, language ecosystem changes, and business-oriented issues. The cost of building and maintaining a single SDK can be substantial, with estimates ranging from $22,687 to $52,000, depending on the complexity and scope. However, using a code generator like APIMatic can significantly reduce costs and time, automating SDK generation and maintenance while ensuring robustness and reliability.