I’m running internet to an out building 550’ from the main house. I’m going to trench an run conduit with pull strings and fiber. Do I just get regular multi it mode with sfp+ connectors on either end? Will my normal 10g switches be fine? Anything else I need to think about?
You want to run 10 Gbps over the fibre? Then you need at least OM3 fibre with suitable SFPs (check the SFP datasheet when ordering)
https://en.wikipedia.org/wiki/Multi-mode_optical_fiber
Do you need to run high availability? If so, you may need to run additional fibres.