CakePHP- multi layer architecture – Stack Overflow

We are using CakePHP 4.x and would like to ask, how to implement as 3 Tier?
For example:
a] what will be there in the 1st tier called presentation layer?
b] CakePHP will be there in the 2nd Tier called Logical layer
c] CakePHP database will be there in the 3rd Tier called data tier

So any advice on the presentation layer?

Thanks
Ela