SQL support 2 styles of Joins statements

Older style:
SELECT ord.Order_Number, ord.Total_Amount, cust.First_Name, cust.Last_Name
    FROM Customer.Orders ord,
         Customer.Customer cust
    WHERE ord.Customer_Id = cust.Id
    AND ord.Customer_Id = 33;


Newer style:
SELECT ord.Order_Number, ord.Total_Amount, cust.First_Name, cust.Last_Name
    FROM Customer.Orders ord
       JOIN Customer.Customer cust
       ON ord.Customer_Id = cust.Id
    WHERE ord.Customer_Id = 33;