Dozens of ArangoDB customers started with - and quickly outgrew - Neo4j. While Neo4j should be credited with building awareness and momentum for the graph database market, the age-old axiom applies: the first mover advantage of strong brand awareness is often paired with the disadvantage of having nimble competitors surpass a legacy vendor’s 1st-gen architecture and technical debt. This is the case with ArangoDB vs. Neo4j, where a number of meaningful and defensible competitive advantages yield real-world consequences for the success of mission-critical applications and use cases.