Johan Blomkvist, an Assistant Professor at Linköping University, and Stefan Holmlid, a Professor there, dive deep into their book, exploring the pivotal role of materials in service design. They discuss the interplay of tangible and intangible elements in service materials and introduce a practical three-part categorization. Time emerges as a vital service material, influencing pacing, rhythm, and public transport experiences. They also emphasize conversations and behaviors as key materials, along with the evolving role of AI in design, making it a must-listen for service design enthusiasts.