The book `Documenting Software Architectures ...` [1] can help. [2] and [3] list a few example documents for Software Architectures, you can google further and

The book `Documenting Software Architectures ...` [1] can help. [2] and [3] list a few example documents for Software Architectures, you can google further and find some more. I think reading through a few sample documents and based on the expectations at your current job, you can derive the necessary doc. [1] https://www.amazon.com/Documenting-Software-Architectures-Beyond-Engineering-ebook/dp/B0046XS3RO https://www.amazon.com/Documenting-Software-Architectures-Be... [2] https://projects.cecs.pdx.edu/attachments/download/3146/Software_Architecture_Document.docx https://projects.cecs.pdx.edu/attachments/download/3146/Soft... [3] https://www.voa.va.gov/DocumentView.aspx?DocumentID=188 https://www.voa.va.gov/DocumentView.aspx?DocumentID=188