Design approval feels like a conclusion, but the most operationally demanding phase of any engagement begins precisely at that moment. Screens have passed review, stakeholders have signed off, and the temptation to treat the project as finished is real. What follows approval determines whether the work that survived critique also survives development, launch, and the first weeks of genuine user behaviour. Three structured steps separate Global UX Agencies directory that protect their approved work from those that simply deliver it and move on.
- What does handoff week deliver?
Handoff week delivers the approved designs in buildable form, and this is the first step after sign-off. Approval alone leaves engineering unusable, since a screen admired in review still needs structure beneath it. Agencies package the work across a defined transfer window. Teams researching partners through a UX Agencies directory should confirm that this stage appears in every proposal they compare.
A complete handoff package contains
- Organised source files with layers named for building,
- Interaction notes covering every state change,
- Asset exports sized for each platform,
- Component documentation engineering can quote.
The package closes with a walkthrough call where developers question each screen while designers still hold context. Questions asked in this call take minutes to answer. However, the same questions asked a month later take days, since the designer must reload a project already left behind. Strong agencies schedule the call within days of approval for exactly this reason.
- Support for building designs
Build support follows handoff, because approved designs drift during development unless someone guards them. Engineers meet real constraints that the mockups never faced, odd screen sizes, slow connections, and data that breaks careful layouts. Each constraint invites a small compromise.
Agencies manage this step through a steady rhythm.
- Weekly design reviews of built screens against approved files.
- A shared channel where developers raise questions within hours.
- Quick rulings on the compromises the build genuinely requires.
- Recorded decisions, so no settled question reopens later.
Keeping up the rhythm costs the agency only a few hours per week, but it saves the product from the slow visual decay caused by unsupervised builds that sustain the product over time. Teams skipping this step often launch products that resemble the approved designs, the way a photocopy resembles a photograph, recognisable but visibly degraded, and the degradation traces to dozens of small, unreviewed choices rather than any single decision.
- Closing the loop after launch
A post-launch review closes the engagement by comparing shipped results against the targets that approval was based on. Agencies return several weeks after release, once novelty fades and real behaviour settles, and both sides read the numbers together. Task completion on the redesigned flows, drop-off movement at previously weak steps, and early retention signals each get measured against the baseline recorded before design began. Screens that missed their target get diagnosed while the agency still holds context, and small correction rounds at this stage cost little compared to rediscovering the problems a year later. The review also produces an honest case study that both sides can quote, built on shipped numbers rather than launch optimism. Those organisations that treat this step as optional end up losing the most value of the engagement because they fail to understand if their designs have actually worked, as they measure approval only by launch dates.
Handoff moves the work, build support protects it, and the post-launch review proves it. Teams that plan all three steps at contract time turn design approval from a finish line into the midpoint, it really is.
