Early childhood education (ECE) is critical for children's growth and development. Thus, ECE teachers as the spearhead of ECE implementation must constantly improve ECE services. As a result of ICT, many applications have emerged, including ECE services. For example, the CERIA program was created to help ECE teachers collaborate online and in person to improve ECE learning. Tech developments will not help teachers if they cannot use the application optimally. As a result, roadshow instruction

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... required to enable ECE teachers use "CERIA." Moreover, pre-activity interviews with ECE teachers revealed that teachers needed innovation to support online and offline collaboration. Thus, a coaching roadshow to numerous ECE instructors in Medan was required to achieve teacher collaboration in improving ECE learning using the researchers' developed "CERIA" application. It is established from the results of implementation that this coaching roadshow can improve teacher collaboration from planning through performance and follow-up.