The short answer: so that work is counted in money. Below is who the product is built for, how it works and what it deliberately leaves out.
A3.Projects is built for organisations that work by project or by order: studios and agencies, law and consulting firms, installation and construction companies, internal IT departments. They share one trait: their main resource is the time of their people, and that is what they sell.
There are plenty of task trackers, free ones included. They answer what was done and by whom. What it cost the company and what it earned stays outside the tracker and gets settled in a spreadsheet once a quarter, by which point nothing can be changed.
A3.Projects closes exactly that gap. Tasks, dates and boards work the way they do in any tracker, but logged hours are multiplied by rates, added to costs and compared against the contract value. Project profitability is visible the same day.
There is exactly one mandatory dependency: A3.ID for sign-in. Rates, costs and the contract value can be maintained by hand from day one, and economics is calculated in full. Connecting neighbouring products replaces manual entry with actual data, but never changes the formula.
Access to a project does not open up its cost, and employee rates sit behind a separate permission on top of the economics permission. You can run a project without seeing a single figure about what your team is paid.
Metrics based on hours are deliberately kept out of employee assessment. As soon as logging affects a personal score, people start writing down something other than what happened, and project economics stops meaning anything.
Hours with no rate are flagged everywhere margin is shown. When migrating from another tracker, the places where the source has no data stay empty. A substituted number would enter the budget as a real one.
A3.Projects is responsible for the work and its economics. People, contracts, bookkeeping and sales are run by other ecosystem products: they share a sign-in, share permissions and share one data model, so nothing has to be carried across by hand.
IntegrationsIt is fairer to say this up front than to have it surface during rollout.
Comments, mentions and an activity feed are there, and the discussion lives next to the task. A separate messenger is not coming: the team uses its own anyway, and a second chat would only split the conversation in two.
The product cannot place tasks across people and dates at the press of a button. Such schedulers produce a formally correct plan that no project manager accepts, and they get switched off in the first week.
A task due date is a date. Dependencies are recalculated against the working calendar of the country, with holidays and weekends taken into account, but the product does not schedule the hour work starts.
The performance area is off by default and ships without a single metric that counts time. It shows the share of tasks closed on time and the share sent back for rework, not who logged the most.
Create an organisation, set up one real project and log a week of work against it. That is enough to see whether the economics adds up.