The Working Party of National Experts on Science and Technology Indicators (NESTI) of OECD CSTP has been working on the concepts of science and technology indicators for over forty years and prepared a series of methodological manuals called “The Frascati Family”. Frascati, Oslo and Canberra Manuals include internationally accepted science, technology and innovation system concepts. The Turkish translation of the Oslo and Frascati Manuals are available and its free distribution by TÜBİTAK is an important step to establish the unity in jargon. The Manuals also composed a reference point in funding programs and policy-development, thus complementing a strategic approach to STI. There has been an update for Frascati Manual in 2015 and for Oslo Manual in 2018.