Organic ingredients make organic pizza
This is not a pizza style, but it is a topic that deserves a little attention.
I researched for days about the word organic, in general, not just related to pizza. It is quite trendy nowadays. I found so much stuff, so many theories and definitions, and so many rules (different from country to country).
However, the first clear, evident difference between organic and non-organic is the price. And do not forget: if something is not labelled organic, it does not mean it is not.
The premium you pay for organic (label) may not be worthed, in some cases.
As I always say
Is pizza itself organic?
For sure, originally, it was!!
Nowadays, it all comes to the ingredients: if they are organic, the pizza is organic too.

What organic ingredients are?
I want to do it right. Ergo, let us look at what organic means and who certifies it.
In US
According to the USDA:
Organic is a labelling term that indicates that the food or other agricultural product has been produced through approved methods.
These methods integrate cultural, biological, and mechanical practices that foster cycling of resources, promote ecological balance, and conserve biodiversity. Synthetic fertilizers, sewage sludge, irradiation, and genetic engineering may not be used.
Organic standards are designed to allow natural substances in organic farming while prohibiting synthetic substances.

in Canada
Organic food must meet the Canadian organic standard — a detailed set of principles, guidelines, and permitted substances used in the organic certification process.

in Europe
An authorized control agency or body must certify organic products. This guarantee that they have fulfilled strict conditions on how they must be produced, processed, transported and stored. The same ingredient cannot be present in organic and non-organic form.
The meaning of all the worldwide regulations
Undubtfully nice logos!. All of them with nice spread green colour. They make me think about nature.
Organic is a labelling term that indicates that the food or other agricultural product has been produced through approved methods. Do you want to know these methods?? then check the links I gave before (click on the logos).
To make it simple, I would say that organic products are related to living matter. These products grow without the use of human-made pesticides or fertilizer. Irradiation and GMOs are prohibited. About animals: they must be raised in living conditions accommodating their natural behaviours.