Supply of services upto rs 5 lakh allowed under composition

What does Supply of services upto Rs 5 lakh allowed under Composition Scheme?

APART from approving various legislative changes the GST Council at its 25th meeting has also approved the proposal to allow supply of services upto Rs 5 lakh per annum to the composition dealers. In other words, while computing the turnover of a Composition Dealer, even if one may be providing certain services along with the supply of goods, such supply of services upto Rs 5 lakh is to be treated as exempted.

So according to above press release :-

Composition Dealer can provide service upto Rs. 5,00,000

But what is meant by treated as exempt ?

And what type of certain services are ?

Please explain if anybody knows.