My experience in most enterprises is that we don't get to pick all the tools and sometimes we don't even get asked our opinion. Recent case: The data team picked S3 for storage, and they picked Power BI for analysis. Don't ask me why they didn't ask my opinion at the time (What would I know, I'm only the principal cloud architect here).
Things like operational overhead don't always get a look in when a team has convinced someone with the purchasing authority that tool X is going to solve all their problems. Even if the entire org has zero experience with it and it's going to have flow on effects.
A recent example at one of my customers was a team deciding to outsource a platform to the provider. (Outsource, not SaaS it's a managed service hosted in AWS). I told them the network design and AWS build on our side to join the two would require significant effort and they said that's fine. Now we've spent almost their entire budget for the move on just working out how to connect their VPC to ours (there are some legislated controls we had to put in place and the vendor architects were less than helpfull). Of course it's all my team's fault because we are the ones who say "you can't just plug the two together" and it would be much better if we had a "can-do attitude like the other team instead of naysaying all the time."
Things like operational overhead don't always get a look in when a team has convinced someone with the purchasing authority that tool X is going to solve all their problems. Even if the entire org has zero experience with it and it's going to have flow on effects.
A recent example at one of my customers was a team deciding to outsource a platform to the provider. (Outsource, not SaaS it's a managed service hosted in AWS). I told them the network design and AWS build on our side to join the two would require significant effort and they said that's fine. Now we've spent almost their entire budget for the move on just working out how to connect their VPC to ours (there are some legislated controls we had to put in place and the vendor architects were less than helpfull). Of course it's all my team's fault because we are the ones who say "you can't just plug the two together" and it would be much better if we had a "can-do attitude like the other team instead of naysaying all the time."