Your choices in detail
The three outcomes you will face need careful consideration. “Renew” works exactly as it always has. “Cancel” stops the service the moment the term expires. “EST” continues the service day-by-day at a billing premium, billed day-by-day at the monthly rate plus a 3% uplift or potentially up to 23% higher where no monthly plan exists. It's not designed as a long-term arrangement. But as a short-term bridge giving partners time to finalize renewal decisions or manage customer conversations without pressure it does what the old grace period used to do, at a modest cost. Use it deliberately and move on.
Of the three, “Cancel” is the one that demands the most care. It's not the same as simply not renewing. Under the old model, letting a subscription lapse gave you 30 days. Under the new model, “Cancel” means the service goes dark the moment the term ends. Microsoft retains the data for 90 days which means that purchasing a new license within that window can restore access. But in the meantime, users lose the service entirely. If that service is email, even reaching support becomes a problem. That's a materially different outcome and one worth making sure your team fully understands before May 4.
The takeaway: “Cancel” should now only be used when a service genuinely needs to stop at end-of-term. In almost every other situation, EST is the safer choice.