Massive stars are key agents in the chemical and dynamic evolution of the Universe. The information that comes to us from early epochs of the Universe comes from galaxies dominated by the presence of massive stars. Therefore, understanding the evolution mechanisms of massive stars is fundamental to understanding the Universe. These mechanisms depend on the physical properties of the environment in which stars are formed, which change with time and space. The role of different physical processes and evolutionary pathways can be clarified by obtaining broad bases of high quality multi-period spectra in environments with different characteristics and analyzing them with realistic stellar models and automatic techniques. The present project intends, in accordance with the objectives of the RIS-3, to contribute to our knowledge of the massive stars and their role in the Universe, to guarantee the scientific exploitation of new generation instrumentation in the Observatories of the Canary Islands and to reinforce the leadership of the IAC team in this field through four objectives:
1. Build a high-resolution, signal-to-noise spectroscopic database for stars in the Milky Way
2. Build a database of intermediate resolution and good signal to noise for stars in nearby galaxies
3. Guarantee the leadership of the IAC in the projects of massive stars within the international project WEAVE
4. Exploit the spectroscopic data bases to obtain stellar parameters