Full backup vs Simple TempDB usage What is the difference in terms of I/O disk usage between Simple Backup and Full Backup?

Does full backup incur more reads and writes?

How does full backup mode impact reads and writes to TempDB's transaction log?
Microsoft recommends setting it to SIMPLE to limit space utilisation. See here. From an IO perspective, SIMPLE mode will generally require the same IO because it has to retain enough transaction data to facilitate rollback of an active transaction. There is some good information on TLOG utilisation here.