What has led to the fact that the field of services has become the most meaningful factor leading to the GDP growth in majority of countries currently?

Services is a an area, which regards the thoughts as well as researches made by different professionals in the sphere of economy is something necessary for the existence of each country. It is implied by the fact that due to the series of various changes and developments its role in terms of contributing to the total GDP growth in a lot of countries has considerably improved.