In the pandemic, Microsoft Teams has been widely used in the educational field to teach lessons through a virtual learning space. The objective of this work is to evaluate the relationship between the use of Microsoft Teams and teaching performance to improve virtual teaching in the Cañar-Ecuador state education system. The methodology was cross-sectional, quantitative to know the shortcomings of the use of Microsoft Teams in teaching performance in the state education system. Forty third-year high school teachers from four Ecuadorian educational institutions in the urban area participated. 80% of teachers consider that teaching performance is good when the use of Microsoft Teams is well-prepared in virtual environments. The lack of strategies causes a regular impact when the use of Microsoft Teams is not adequate, it is detrimental to 91.7% of teachers due to the lack of teaching materials in the classes. As a conclusion, curricular planning is necessary to achieve digital educational excellence.