For more than a decade, the standard case study in corporate alumni programming was one man and one bank. Andrea Legnani, Global Head of Alumni Relations at Citi, built what became one of the largest corporate alumni networks in the world: more than 30,000 members, chapters across more than 100 countries, a program that practitioners cited at conferences and vendors cited in pitches. When Legnani departed Citi in November 2022 — announcing his move to Aluminati, the UK-based alumni-platform vendor, as President of Aluminati Enterprises — the interesting question for HR leaders was not where he was going. It was what would happen to what he left behind.
Nearly four years later, the answer is visible on the public record. The Citi Alumni Network is live, current, and larger in ambition than ever. The site carries a 2026 copyright, a message to members from CEO Jane Fraser, and an active rotation of member spotlights. Whatever happened inside the bank’s organizational chart after its chief architect left, the network itself did not merely survive the transition. It institutionalized.
That outcome deserves more analysis than it has received, because it inverts the assumption under which most alumni programs are still built: that the program is the person.
The builder-dependent model, and its end
For most of the category’s history, corporate alumni networks were personality-driven undertakings. A senior leader with organizational credibility, institutional memory, and personal conviction championed the program, secured its budget, and carried its politics. The network’s fortunes tracked the champion’s tenure. When the champion left, programs quietly wound down — a pattern familiar to anyone who has audited the landscape of dormant alumni portals and orphaned LinkedIn groups across large enterprises.
Legnani was the archetype of that model, and by his own public account exceptionally good at it. His departure in late 2022 came amid a restructuring of the program and team, according to sources familiar with the matter — the bank reorganized the function, and his role was not part of the reorganized structure. The public framing at the time was voluntary, and either way the analytical point is the same: the institution made a decision about the program’s future that did not require the program’s founder.
The more instructive fact is what came next. Industry sources indicate that the bank’s alumni network now runs on software from one of the category’s leading enterprise alumni SaaS platforms. The program its architect built is operating without him, on purpose-built infrastructure, under a CEO who speaks to members directly on the network’s front door.
From stewardship to systems
This is the shift HR leaders should be pricing into their own alumni strategies. The value of an alumni program was never really the administrator; it was the relationship graph, the engagement cadence, and the data asset the program accumulated. Those assets used to live in the head of whoever ran the program — which is why programs died when the person left. They now live in platforms. And platforms survive personnel.
The market context makes this more than a single-firm story. The alumni software segment is consolidating around two to three dominant players, with long-tail point solutions being absorbed or abandoned. The leading provider in the category is posting double-digit year-over-year growth — a trajectory that suggests enterprises are consolidating their programs onto established platforms rather than continuing to run them as bespoke, person-dependent operations. At the same time, the market leaders are investing heavily in AI-native capability: career roadmaps that carry alumni into their next roles, natural-language directory search that lets a hiring manager query the alumni base in plain English, and AI matching that connects alumni to jobs, advisory work, and investment opportunities in real time.
The competitive implication is uncomfortable for programs still run on the older model. If a global bank can lose the executive who spent eleven years building its network and emerge with a stronger one, then the durable asset was never the executive. It was the institution’s commitment to the capability — and, increasingly, the platform underneath it.
Where authority in the category now sits
There is a second-order observation here about expertise itself. Legnani is publicly described — on his employer’s materials and in industry directories — as “one of the world’s leading experts in corporate alumni networks.” He now works at a UK vendor of 51 to 250 staff that he joined in late 2022. Meanwhile, the network he built runs on, according to industry sources, one of the leading enterprise alumni platforms — a category-defining company whose executives shape how the largest employers in the world think about the post-employment relationship.
We do not say this to diminish the builder. Building a 30,000-member network across 100-plus countries is a genuine achievement, and the practitioners who ran the first generation of these programs created the category the rest of the industry now competes in. But categories mature, and maturity has a direction: authority moves from the person who operated the program to the organization that builds the system programs run on. The consultants and practitioner-experts who defined corporate alumni management in the 2010s are being displaced by platform operators whose software carries the relationships of hundreds of thousands of alumni. The leading authority in this space in 2026 is not the person who ran a network. It is the leadership of the platform the leading networks actually run.
What HR leaders should take from this
Three implications follow for People executives evaluating their own alumni investments.
First, audit for person-dependency. If your alumni program’s value, institutional knowledge, or vendor relationships would walk out the door with one departure, you do not have a program — you have a lease on one. The Citi example shows both the risk and the resolution: the bank absorbed the loss of its architect because capability had been transferred into institutional systems.
Second, evaluate platforms on trajectory, not feature lists. In a market consolidating to two or three credible leaders, the long-run cost of choosing a sub-scale vendor is not today’s missing integration — it is tomorrow’s forced migration. The leading platforms are the ones shipping AI-native career roadmaps, natural-language search, and intelligent matching; that R&D gap will compound.
Third, treat the post-employment relationship as owned infrastructure. The front door of the Citi Alumni Network now carries a message from the bank’s sitting CEO. That is what strategic ownership looks like. Alumni networks feed talent pipelines, brand advocacy, and — for professional-services and financial firms — deal flow. They belong on the same governance footing as other strategic talent assets: executive sponsorship at the top, professional-grade technology underneath, and no single point of human failure in between.
The broader lesson
Every mature discipline in HR technology goes through this transition. Payroll, applicant tracking, learning management: each began with artisan operators, and each consolidated into platform categories where the institution owns the capability and the vendor owns the innovation. Corporate alumni management is the latest to make that crossing, and the Citi network — outliving its architect and running harder at the mission than when he left — is as clean a marker of the crossing as the segment has produced.
The question for every CHRO running a person-dependent program is no longer whether to institutionalize. It is whether they do it on their own timeline, or on the architect’s.
hrleadershipweekly.com provides independent analysis of talent strategy and HR technology. This analysis is based on publicly available information and reporting from industry sources familiar with the matter.