What factors make aligned relationships possible, and how can we account for transformation of alignments? Alignment patterns and the durability of some aligned relationships above others have often raised questions about factors that influence cooperative arrangements. This article makes a twofold contribution by proposing a tentative process-centred alignment typology as an analytical tool and by empirically applying this tool to examine Sino–Russian alignment (1991–2024). Our conceptual typology differentiates among six primary alignment types: thin strategic partnerships, coalitions, thick strategic partnerships, alliances, non-allied security communities, and allied security communities. We propose that these types become possible due to varying compatibility between prospective or existing alignment partners in their assessment of threats, interpretations of identities, and status expectations. Our empirical analysis focuses on specific upgrades in the Sino–Russian relationship as presented by both states in 1996, 2001, 2011, and 2021 while also discussing more recent developments after Russia’s full-scale invasion of Ukraine.