“This lengthy monograph is an excellent addition to the long-running École d'Été de Probabilités de Saint-Flour series of extended lecture notes, continuing their tradition of reader-friendly (for an active researcher in mathematical probability) authoritative accounts of an active technical topic. It has the traditional underlying definition/ theorem/proof format … and numerous well thought out figures, which (to your reviewer) are essential for any work on graph theory. … this monograph will long remain a key account of its topics.” (David J. Aldous, Mathematical Reviews, December, 2024)