Transcript
Transcript: Unlocking the Potential of Cloud: Understanding Cloud Computing Service Models
[00:00:00 The text “Unlocking the Potential of Cloud – Pizza as a Service” appears onscreen.]
[00:00:07 The screen fades to Tarek Houssari in a video chat panel.]
TAREK HOUSSARI (Director, Business Informatics Solutions, Shared Services Canada/Directeur des solutions informatiques de gestion, Services partagés Canada): What is the difference between IaaS, PaaS, and SaaS. The perfect way, let's talk about pizza. Everybody understands pizza, I think.
In this case, like the on-prem, it's basically, essentially, you have the cheese, the toppings, the tomatoes, the pizza dough, you have the oven at home, the gas, the soda and the drinks, and the table. You make everything from scratch.
This is basically on-prem. You have to do everything. You have all the ingredients to do it, you do it. The advantage to this is basically you can build whatever you want. You can custom build whatever you want. You can put whatever toppings. The field is open.
And in this case, it's a blessing and a curse at the same time. If you move to the cloud and talk about Infrastructure as a Service, and in this case, if you go to the grocery store and you have a pre-made pizza, it's uncooked, you take the pizza, it's uncooked, you bring it home, you put it in your oven, you heat it up, you bring your drinks, and eat it at home.
So, this is kind of Infrastructure as a Service where, basically, it's pre-packaged. You don't have a lot of choices. You have a few choices. You take it as is and you put it in the oven. So, in that case, you don't have to worry about, where do I get the dough, tomato sauce, none of that. It's pre-packaged. Just throw it in there.
And that's kind of the infrastructure as a service.
When it goes to kind of Platform as a Service, it's sort of like pizza delivery where you call in and in that case, you have certain options, you select, it comes over, and basically it's pre-cooked. It's ready. All you need to do is just kind of use your own kitchen or dining room and eat it. In that case, you're able to kind of consume that service.
And in that particular case, it's pizza delivery. The last one, it's dining out, you go to a restaurant.
And in that case, you go to a restaurant, you have the menu. All you need to do is look at what you like, you order it, it comes. Nothing to worry about. You don't need to do anything. You don't have to worry about that and you just kind of get what you want.
And if you think about it from our perspective, you're going to say, you know what, I cannot afford to dine out in a restaurant every day. That becomes very, very expensive and this is where it's important when you're talking about that. You need to look at the total cost of ownership.
So in that case, it may be expensive to go out at the restaurant, but in that case, if I don't have to have an oven, I don't have to have a gas pipeline coming, I don't have to have a dinner table, this is where you have to kind of do a proper comparison.
So, it's a good way, a logical way to separate them through.
IaaS is just getting the infrastructure. I still have to do the application. I still have to do the platform. [PaaS,] You're getting a platform. I just need to go in and configure and code my application.
And SaaS, I just need the username and password. I can start using it.
[00:03:11 The video chat fades to the CSPS logo.]
[00:03:17 The Government of Canada logo appears and fades to black.]
