ITIL Version 1 turns to more than 30 volumes in 1986-1996, that was the time when this version is used by many of the IT companies. Due to very technical in nature, this version got upgraded in to next version i.e ITIL Version 2, in 2001. This version is much more accessible and focused as compared to the previous one. This new version of ITIL is a now a combination of 9 Management Sets. Out of them 2 Service management Sets were used more commonly across IT Sector. ITIL Version 2 Glossary were come in to picture in 2006.
ຮຸ່ນ ITIL Version 1 ກາຍເປັນຫຼາຍກ່ວາປະລິມານ 30 ໃນ 1986-1996, ເຊິ່ງແມ່ນເວລາທີ່ໃຊ້ເວລາໃນເວລາທີ່ສະບັບນີ້ຖືກນໍາໃຊ້ໂດຍບໍລິສັດໄອທີຕ່າງໆ. ເນື່ອງຈາກລັກສະນະດ້ານວິຊາການຫຼາຍ, ສະບັບນີ້ໄດ້ຮັບການປັບປຸງໃນສະບັບຕໍ່ໄປເຊັ່ນ: ITIL ຮຸ່ນ 2, ໃນ 2001. ຮຸ່ນນີ້ແມ່ນສາມາດເຂົ້າເຖິງແລະສຸມໃສ່ຫຼາຍກວ່າເມື່ອທຽບກັບກ່ອນຫນ້າ. ຮຸ່ນໃຫມ່ຂອງ ITIL ນີ້ແມ່ນການປະສົມປະສານຂອງ 9 Management Sets. ນອກຈາກນັ້ນ, ບໍລິສັດບໍລິການບໍລິການ 2 ໄດ້ຖືກນໍາໃຊ້ທົ່ວໄປໃນທົ່ວຂະແຫນງ IT. ຄໍາແປສັບ ITIL Version 2 ໄດ້ມາຢູ່ໃນຮູບໃນ 2006.