Lifetimes public static class Lifetimes Contains all the built-in lifetime managers. Documentation Code public static readonly LifetimeDescriptor NamedScope NamedScope lifetime. public static readonly LifetimeDescriptor PerRequest PerRequest lifetime. public static readonly LifetimeDescriptor Scoped Scoped lifetime. public static readonly LifetimeDescriptor Singleton Singleton lifetime. public static readonly LifetimeDescriptor Transient Transient lifetime.