The following is an in-depth study of the Pfizer vaccines and how they came to be available. Put together by the Canadian COVID Care Alliance.
They explain the usual procedures for bringing a vaccine to market and compare with that was done here.
For example, the usual process of vaccine development is 10 years, rarely it can be done in 5, but in our case it was done in 1 year, with many steps omitted:
There is a video and a pdf. The pdf includes links to all the references.
Here is the pdf: The-COVID-19-Inoculations-More-Harm-Than-Good-REV-Dec-16-2021