IGT is the 3rd Tier - Level in the Italian Wine Classification System, which stands for Indicazione Geografica Tipica (Typical Geographical Indication). An IGT classed wine is ‘typical’ of a particular geographical local - region. Most IGT wines are simple, made from grapes grown locally and intended to be enjoyed in their youth.
You will find many IGT wines from right across Italy; made from Sangiovese, Primitivo, Pinot Grigio grape varietal to name just a few, all made and ideal for early enjoyment. In general think of them as approachable, easy drinking wine styles - well priced and suitable for everyday pairing with; pasta dishes, pizza and bbq’s, - they typically don't age long, and are ready to be enjoyed on release.

 

But there are exceptions, as you can always find a small family wine producer, who has some old vines, and winemaking is not their primary business, and they craft quality rustic wines labeled IGT (now IGP) across the country.
The results of these wines have been varied. Some are expensive, but most are affordable wines, a step up from table wines; good for every day drinking. This level of wine will state IGP on the label, as of 2016 there are 118 IGP's throughout Italy.
The IGT classification was brought in as part of the 1992 Wine Legislation's - which came to be known as the 'Goria Law' - after Giovanni Goria, the then Italian minister for agriculture. Its aim was to accommodate those wines which did not qualify for any of the quality wine designations DOC & DOCG. Which are generally intended to protect traditional wines such as Chianti or Barolo. It is considered broadly equivalent to the French vin de pays designation.
IGT wines are listed by the specific region in which they were grown and the grape varietal used that make up 80% of that wine, in that order. This category allowed winemakers to branch out and try new winemaking ideas in new regions. They were given the freedom to create and experiment, which has spawned a whole new style of wines. Many international grape varietals are used, and often vinified in the ‘New World’ style of fruit-forward wines - enjoy.