They had some network challenges a couple of years ago but they brought in new leadership that implemented a change control process with more peer reviews of updates. They could do a better job certifying and rigorously testing all their code. I know they do that for large releases but it should even be done for patches. But that's the same with other vendors. Sometimes we find bugs after upgrades, and sometimes they're minor. But overall, they're at four-nines, which is comparable to other platforms we worked with.

I've never experienced downtime in Five9, so I find it stable.

I rate the solution’s stability a nine out of ten. Once or twice, we had a little downtime, which is understandable. No platform is perfect.

We have found that the platform is not as stable as we would like. We have had six major outages this year, which raises concerns about the overall stability of the platform. It is one of our biggest concerns. I would rate the stability a seven out of ten.

Five9 is mostly stable. There have been one or two minor issues with their platform, and they were resolved very quickly.

Stability-wise, Five9 has been very good. The previous call center software had the word "downtime" associated with it, versus Five9, which only had two issues in thirteen months. It only took a combined fifteen minutes for the issues to last, so the company found Five9 very stable. My company is very pleased with how stable Five9 is.

The stability is good overall. It does give us significantly more visibility into issues, but it can still, at times, be hard to nail them down. The fact that it is a cloud solution has been very helpful, but there are certain issues around features that Chrome has deployed that we have to figure out. When we bring them to Five9's attention, they are usually able to help us navigate them. It seems that sometimes they already know about an issue, so it would be helpful if they more proactively engaged with us when they hear of those kinds of things. That way, they could guide us through it, rather than waiting for us to bring it to them.

I am extremely satisfied with the stability of Five9.

Five9 is highly stable. 

I've worked with different solutions and different calling tools, and Five9 is definitely the most reliable. It's not perfect; sometimes there are issues where the system is down. That happens, and we understand that. But in general, it's a very reliable platform. The business has been working with this solution for years. You need a platform that you can trust and whose quality is good.

They have servers in different locations. Sometimes, one of them is down, and it's a very delicate issue when that happens because the business is running and every second counts. But it's not something that lasts too long, and that's because they have those different locations for their servers. You can change the server you're using and be up again. Downtime does happen and it even impacts the business, but at least it's not something that last too long.

The stability is good. I'd rate it eight out of ten. There have been cases of outages, however, they have redundancy built in so you are never down for long. There haven't been many times we've been down for an extended period.

The stability isn't as good as we expected, but we have not experienced any significant problems. 

We had issues at one point, but it had to do with an update that they were doing. I do not know what happened, but we were down for about a day and a half. It was due to some update they did where they transferred us to another server host or something like that. Other than that, we have not had any issues. I would still rate them very high.

It seems pretty stable.

I would rate the stability of Five9 as six out of ten.

We rarely have any stability issues. If we do have any, it is resolved quickly and looked at to see how they can avoid future problems. I'd rate the stability nine out of ten.

I rate the tool's stability a ten out of ten.

No, in these 10 years, I have rarely had an incidents with Five9.

A few call quality issues, but nothing major at all.