Friday afternoon, 14:47 It is 14:47 on a Friday. Finance just asked you to prove an SLA on a call from six months ago. The Queues app shows forty-five days. You are about to have a bad afternoon. If you haven't had this exact afternoon yet, one of your colleagues has. The Teams Queues app retains call data for forty-five days. That is fine for the "what happened yesterday" question; it breaks the moment anyone asks "what happened last quarter." We deploy Teams calling and the Queues app for customers in 90+ countries, so we see this decision come up often. This article is a straight breakdown of your four honest options when you outgrow forty-five days, and how to decide between them without buying something you do not need. Level 1: stay inside the Queues app The Queues app is free with Teams and covers more than most managers realise. Real-time view of who is available, shared call history so two agents do not return the same missed call, queue-level KPIs, and the forty-five-day reporting window itself. Use it if your queue volume is steady, you review weekly or daily, and forty-five days of history is more than you ever look back at. You have outgrown it when you need month-over-month comparison, quarterly reviews, annual reports, or formal evidence that a particular SLA was met on a particular date six months ago. If any of those just described your world, keep reading. The next tier is work you do yourself. Level 2: export to Power BI or Excel A common first step once you need longer history is to pull Queues data into Power BI, build a data model, and keep the history yourself. This works. It is also work. Plan for a data pipeline that someone maintains when Microsoft changes the schema, a definition of "a good month" that the whole team agrees on, and the ongoing effort of making the dashboard actually useful. Most organisations underestimate this. A Power BI report nobody trusts is worse than no report at all. Use it if you have a BI team that wants to own this and your reporting needs are relatively stable. Skip it if you want someone else to maintain the plumbing, or you need supervisor-grade features like live coaching, call recording search, or IVR analytics that are not in the standard export. If Level 2 sounds like work, that is because it is. Level 3 is where you pay Microsoft to do some of that plumbing for you. Level 3: Teams Premium Teams Premium extends the Queues app with additional analytics and richer call handling. For teams close to the Queues app ceiling but not ready for a separate contact center product, it is a reasonable middle step. Check Microsoft's current licensing page for exact retention limits and feature scope before committing. The Premium bundle is reviewed regularly and the feature list moves. Use it if you are already standardising on the Microsoft stack, you need a bit more than Queues offers, and the Premium licensing cost fits your per-user budget. Premium closes part of the gap. For some teams it closes enough. For others the question changes entirely at the next tier. Level 4: a dedicated contact center platform At some point the question stops being "how do I keep more history?" and becomes "am I running a contact center or not?" Once the job of your team is taking calls, not just incidentally answering them, a dedicated contact center platform earns its keep. What you get that the earlier levels do not: Unlimited or long-configurable retention, with search and filtering across years Agent-level analytics: performance, handle time, call quality, coaching notes IVR analytics: where callers drop, which menus drive traffic, which options need redesign Real-time supervisor tooling: live wallboards, whisper and barge, queue intervention Outbound reporting: connection rates, disposition codes, activity per agent Use it if the call queue is a revenue or support channel for your business, not a side effect of people having phones. We covered the broader decision of when you've outgrown Queues overall in the outgrowing Queues article, and the outbound-specific version in the outbound article. Choosing honestly The right answer is the smallest tool that fits your actual question. If the Queues app solves what you need, use it. If Power BI is the right scope and you have the team, go that way. If you are running a real contact center, the platform will pay for itself in staffing decisions alone. The wrong answer is buying a platform you do not need, or running on the Queues app when you should have upgraded a year ago. Most of our customers sit on Teams alone and that is exactly right for them: running Teams telephony well is the bulk of what we do. For the ones who have outgrown the Queues app and Teams Premium, we also build Purple+, one of the Level 4 options. If you want to walk through where you are on this spectrum, get in touch.