Lazy Loading in EF Queries

public class Order
{
    public int OrderId { get; set; }
    public virtual Customer Customer { get; set; }
}

// Enable lazy loading in DbContext
public class MyDbContext : DbContext
{
    public DbSet<Order> Orders { get; set; }
    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseLazyLoadingProxies();
    }
}