Book excerpt: Nearly every church is trying to help their congregants build relationships with others, grow as disciples, and/or engage in meaningful service through small groups. Many have argued that these small groups are the preferred vehicle for relationship building, disciple making, and membership assimilation in the local church, especially in large, multisite churches. Leading Small Groups That Thrive shows small group leaders, step by step, how to plan for, launch, build, sustain, and multiply highly effective, transformational, healthy small group experiences where people grow spiritually together. Based on a large-scale research study of small group pastors, leaders, and members, Leading Small Groups That Thrive gives church leaders both what they want--practical, straightforward, actual small group member voices and experiences, and compelling guidance on how to build transformational groups complemented with real-life examples and data of successful small groups--and what they need--substantial, challenging insights and a data-driven model grounded in the latest research on church small groups.