In Reverse Engineering the source code of the BioNTech/Pfizer SARS-CoV-2 Vaccine, Bert Hubert breaks down the mechanism and key components of the BioNTech/Pfizer RNA vaccine.

Here are the key ideas I took away from this fantastic article:

1. The mRNA vaccine encodes the SARS-CoV-2 spike which generates an immune response.
2. mRNA is fragile and must be stored in deep freeze.
3. The vaccine consists of 6 high-level components.

See also

1. Zanny Minton Beddoes interviews Bill Gates about COVID-19