The right Microsoft Project Online replacement is the one that matches how your portfolio actually runs, and for most PMOs that answer is knowable within a few weeks. What makes the decision hard is not a shortage of options. It is that nearly every firm offering to help you choose has exactly one destination to sell, so the advice tends to describe the advisor’s practice rather than your estate.
Project Online reached retirement on September 30, 2026. New sales ended the previous October, and Project for the web had already folded into Planner before that. Some PMOs moved in time and are now living with a destination chosen under deadline pressure. Others are running on an interim footing and have perhaps two quarters to make a decision they expected to have years to make. Both groups are asking the same question, and it is a better question than the deadline allowed: where should this portfolio actually live?
This piece sets out how we answer that, including the cases where we tell clients not to choose Microsoft and the cases where we tell them not to choose Smartsheet. It is the same reasoning we run inside a Platform Migration Assessment, which scores an estate, recommends a destination with the rationale written down, and prices the move before anyone commits to it.
Why the Deadline Passing Changed the Question
While the retirement date was still ahead, the decision was dominated by time. Teams asked what could be stood up before the end of September, and a good number chose the destination that could be reached fastest rather than the one that fit. That was a reasonable trade, because an unsupported platform carrying live programs is a real operational risk and no portfolio manager wants to explain that to an executive.
Now that the date has passed, the constraint has changed. A PMO on an interim footing has room to make the decision properly. A PMO that moved quickly has something it did not have in August, which is evidence: a few weeks of live running will tell you whether the destination you chose can hold the portfolio, or whether you have bought yourself a second migration in 18 months. In both cases the question is no longer how fast. It is whether the platform matches the shape of the work, which is harder to answer and worth spending three weeks on rather than three days.
What Microsoft Has and Has Not Said About Planner Premium
Planner Premium is the stated successor, and for a large share of the market it is the right one. It carries Goals, Sprints, baselines, advanced dependencies and Gantt views, and the Planner Agent can build task lists from Teams transcripts and generate workback schedules. If your PMO already lives inside Microsoft 365, the integration and licensing gravity are genuine advantages.
Microsoft has also been unusually direct about the limits. It has said plainly that it is not matching the feature depth of specialized portfolio management platforms, and that it is competing instead on integration, convenience and bundling. That is a fair description of the product and a useful thing to hear from a vendor. It also means “you are a Microsoft shop, so go to Planner” is only half an argument. The other half is whether your portfolio needs the depth Microsoft has said it is not building.
One practical consequence belongs in the decision rather than in an invoice later. The Planner Agent requires a Microsoft 365 Copilot license, which is a real per-seat cost across a PMO and its contributing programs. It should be forecast alongside the platform license, not discovered in the second quarter after go-live.
When a Project Online Replacement Should Not Be a Microsoft Product
We tell clients to look outside Microsoft when the portfolio itself is the workload. That usually shows up as cross-functional programs with complex dependency chains, resource management across shared pools, heavy external collaboration with owners and subcontractors, and provisioning at a scale where new projects have to be stood up from a governed template rather than assembled by hand.
Construction and capital programs are the clearest version of this. A contractor running several builds in parallel, each with its own trade partners and its own owner reporting format, is not really asking for task management. It is asking for portfolio control, and Smartsheet Portfolios is generally the better destination for that shape of work, with Smart Agents configured and governed rather than simply switched on. The test we use is straightforward: if the hardest thing your PMO does is coordinate across organizations and roll the result up for someone who does not work for you, the depth Microsoft has said it is not building is the depth you need.
When Smartsheet Is the Wrong Answer Too
The reverse mistake is just as common and often more expensive, because it arrives with a longer implementation. A mid-complexity PMO already deep in Microsoft 365, running a portfolio that is large but not structurally complicated, will frequently buy portfolio capability it never uses and then spend its first year rebuilding integrations back to the estate it already had. Where that is the picture, Planner Premium is the better destination and we say so, even though it is the smaller engagement for us.
There is a third pattern that is neither. Some teams describe a portfolio problem but are actually describing task throughput: too much work, too many handoffs, and not enough visibility inside a single function. ClickUp fits that shape well and fits it at a price that reflects what is being solved, which matters when the budget has to attach to an existing program rather than a new line.
Occasionally the requirement turns out not to be project management at all. When the real need is timesheets, resource scheduling, project accounting or billing, that is Dynamics 365 Project Operations territory, and we route it to a partner rather than configuring a portfolio platform to behave like a finance system.
The Option That Looks Safest and Usually Is Not
Project Server Subscription Edition deserves an honest mention, because it is the one destination offering genuine feature parity, and where parity is non-negotiable and on-premises operation is acceptable it is defensible. We will advise on it, but we will not encourage it: it is a declining path, and choosing it usually means running this same decision again in a few years with an older estate and fewer people who remember how it was built. If parity is the reason it is on your list, test whether parity is a requirement or a habit.
The Questions That Actually Decide It
Most destination arguments resolve quickly once four questions are answered honestly. These are the ones we open a fit review with, and you can work through them without us.
How complex is your dependency structure, really?
Count the dependencies that cross a team, a vendor or a funding line, not the ones inside a single schedule. Portfolios that are large but internally simple behave very differently from portfolios that are mid-sized and structurally tangled, and the second kind is what pushes a decision toward specialized depth.
Who has to see this portfolio who does not work for you?
External reporting is the single strongest predictor we have found of which destination survives contact with reality. If owners, agencies or joint venture partners consume your roll-ups in a format they specify, external collaboration stops being a feature and becomes the requirement.
What did your last platform change do to adoption?
If the honest answer is that people drifted back to spreadsheets within two quarters, the destination matters less than the change work around it. That history should shape how much of the budget goes to enablement rather than to licenses.
What will this cost at full seat count, including the assistant licenses?
Every destination now meters its AI capability in some form, whether by plan tier, per seat, or consumption. Model it as a real headcount before you choose, because a platform that looks cheaper on the license line can be the more expensive one in year two.
Where to Start
If you want the decision made properly, our Platform Migration Assessment runs three to four weeks for a fixed fee. It produces an estate analysis with complexity scoring, a destination recommendation with the reasoning written down rather than asserted, a licensing and cost model at your real seat count, and a migration plan with a risk register. It is platform-neutral by design, which is only credible because we deliver every destination it can recommend.
If you want a shorter first step, a thirty-minute Platform Fit Review will usually narrow the field to the two destinations genuinely in play and tell you what the assessment would need to resolve.
Book a 30-minute Platform Fit Review, or see what the Platform Migration Assessment includes. Contact us to get started!
About Optimum
Optimum is a nationally recognized IT consulting firm and official partner of Microsoft, Smartsheet, ServiceNow, Make, and other leading enterprise platforms, helping organizations modernize project management, portfolio governance, and work management processes.
We focus on driving efficiency, improving visibility, and reducing operational costs through an assessment-led, partnership-driven approach. Our expertise spans project and portfolio management, platform migrations, PMO design, workflow automation, data and analytics, and enterprise platform implementation. We help organizations create intelligent operations by connecting people, processes, data, and reporting into a modern work management ecosystem.
Reach out today to explore how Optimum can help your organization modernize project and portfolio management.
Contact us: info@optimumcs.com | 713.505.0300 | www.optimumcs.com
Frequently Asked Questions
What replaced Project Online?
Microsoft positions Planner Premium as the successor, carrying Goals, Sprints, baselines, advanced dependencies and Gantt views. It is the right destination for many mid-complexity PMOs already inside Microsoft 365, but Microsoft has stated it is not matching the feature depth of specialized portfolio platforms, so portfolio-heavy estates often land better on Smartsheet.
Does Planner Premium require a Microsoft 365 Copilot license?
The Planner Agent does. That is a per-seat cost across everyone who needs the agent, and it should be modeled at full headcount before a destination is chosen rather than after.
Is Smartsheet better than Planner Premium?
Neither is better in general terms. Smartsheet tends to win portfolio-heavy, cross-functional and externally reported work; Planner Premium tends to win mid-complexity portfolios already deep in Microsoft 365. The estate decides, which is why we assess before recommending.
How long does a PMO platform migration take?
The assessment takes three to four weeks. The migration itself depends on estate size, integration count and how much reconfiguration the destination needs, and the assessment is what turns that into a dated plan rather than an estimate.
What is a Platform Migration Assessment?
It is a fixed-fee engagement that analyzes your current estate, scores its complexity, recommends a destination with written rationale, models licensing and cost, and produces a migration plan and risk register. Because Optimum delivers every destination it can recommend, the recommendation is not tied to a single platform practice.
