When a company introduces a new line of products, what marketing function is being performed?

The introduction of a new line of products is primarily linked to product service management. This function involves overseeing the development and management of products from their inception through to their launch and post-launch phases. It ensures that the products meet market demands and fulfill consumer needs.

During this process, product service management focuses on crucial elements such as product design, quality assurance, and the operational aspects necessary for a successful launch. It encompasses decisions regarding the features of the product, pricing strategies, and the overall product lifecycle management. This function is essential for ensuring that the new products not only align with the company’s brand and market positioning but also excite and attract the target consumer base.

While market research is vital in determining consumer preferences and trends prior to the product launch, it does not encompass the entire scope of managing the product's introduction. Advertising management and public relations are also critical, but they primarily focus on promoting the products rather than managing them throughout their lifecycle. Thus, product service management is the most applicable function in the context of introducing a new line of products.