the economic crisis were the main domestic problems that arose during the reign of Alexios I. In order to cope with these issues, the Emperor carried out substantial administrative reforms. His main objective was the creation of centralized power. In his effort to achieve this, he made use of the imperial aristocracy. In the central administration young officers made their appearance as, for example, the logothetes ton sekreton, who was in charge of the coordination of the state's various services (sekreta), and the megas logariastes, who controlled the economic services. As for the provincial administration, thematic institutions decayed. Changes were noted also in the administration of the armed forces. Alexios I created the office of the megas domestichos, the head of the Byzantine army, which still consisted entirely of mercenaries, natives and foreigners. Besides, the droungarios tou ploimou who was until then the head of the imperial fleet, was replaced by the megas doukas.
A peculiar feature of Komnenos I´s reign was the creation of new titles within the court. This had become a practical need because previous emperors had bestowed so many titles that they had lost their value. Thus, it was necessary to create new ones for those occupying high offices, mainly relatives of the Emperor. The sebastokrator, for instance, became the most important title after the Emperor and replaced the former title of caesar.
With his reforms Alexios I managed to stabilize the state and to reinforce imperial authority despite the extraordinary taxation he was forced to impose to meet the costs of defense and other pressing needs.