Ditto. Almost every recruiter will ask you at the onset if you are interviewing with other places. They ask so they have a lever to speed up your process if necessary - eg "hey hiring manager, this dude's resume looks great and I had a good convo with him, but he's already had one round with AWS. We better line up our side of things ASAP"

As I mentioned in another comment, I try to be forthcoming with companies especially in cases where the transparency doesn't hurt me and helps everyone. So if the following is the case, I would say something like "Yup, I am in a pretty active search right now, I am talking to a handful of other companies. I am definitely interested in going through the process with you as well, so if you want I will keep you abreast of how my other conversations are going throughout this process" - I've found that this both creates credibility/good vibes and the company is often able to keep pace with the process and offer timing.

Elsewhere in this thread someone was asking how you can possibly get to a place where you have multiple offers around the same timeline - it's something like this.