How many cantatas did BACH decide to write when he was in Leipzig 1723-1750?

During his time in Leipzig from 1723 to 1750, Johann Sebastian Bach wrote a total of about 300 cantatas. However, only around 200 of these are extant today. Most of the cantatas were composed for church services, reflecting the liturgical calendar. His work in this genre significantly contributed to the development of sacred music in the Baroque period.