Direct answer
When a developer or vendor leaves, hold a small number of structured sessions rather than one long conversation. Plan them by topic: how the system is put together, how it is deployed, where the data lives, what it connects to, what runs on a schedule and what is known to be broken. In each one, have the successor do the work while the developer watches, and ask specifically for what was never written down. Record the sessions, file the notes, and turn the answers into documents. Finish with a test: can someone else now do the routine jobs without asking? This page covers that process. What documents you should also receive is in what documentation to receive with custom software, and we do not repeat it.
Why sessions add something documentation does not
Even good documentation misses things: the step done by hand every month, the setting that must be changed before a particular release, the customer with unusual needs, the reason a piece of code looks strange. Sessions surface these because a question gets asked at the right moment. They also reveal how much the documentation actually helps, which is useful to know before the developer is gone.
A session plan by topic
Split the transfer into separate sessions so that each has a clear purpose and a written result. A workable set of topics is:
- Architecture: the main parts of the system, how they fit together and why
- Deployment: how a change gets from a developer's machine to live, and how to step back
- Data: where it is stored, how it is backed up, and how to restore it
- Integrations: each connected service, who owns the account, and what breaks if it fails
- Recurring jobs: anything that runs on a schedule, or must be done by hand at regular intervals
- Known problems: bugs, weak spots and things the developer would fix next
Live walkthrough: the successor drives
For deployment and other routine jobs, do not watch the developer do it. Have the person who will take over do it while the developer watches and answers. Every place the successor gets stuck is a piece of knowledge that was missing, and it appears while the developer is still available to supply it. Where it is safe, use a test environment rather than the live system.
Ask for the unwritten
Prepare questions that prompt memory rather than asking whether there is anything else to add. Useful prompts include:
- What do you do by hand that the system does not do for you?
- What is scheduled, and where is the schedule kept?
- Which workarounds are in place, and what were they working around?
- Who are the contacts at third-party vendors, and what do they know about us?
- What work is in progress, and where did you leave it?
- What would you check first if the system stopped working tonight?
Record the sessions and file the output
With the developer's agreement, record each session and keep the recording with the project documents. Write a short summary after each one: what was covered, what was decided and what remains open. A recording that nobody can find is not a handover, so agree where it will be stored and who can reach it. Avoid recording anything that would expose credentials on screen; passwords and keys belong in a secrets manager, not in a video.
Turn the answers into documents
After each session, someone should convert what was said into written instructions, then ask the developer to check them. This is the moment when unwritten knowledge becomes written knowledge that survives the next departure. Use the headings in the handover checklist to decide where each piece belongs.
When the developer is not available
Sometimes the developer has already gone, or will not cooperate. In that case the sessions cannot happen, and you need a different approach: reading the system, mapping what exists and asking around for anyone who knows a fragment. The inherited web app takeover assessment describes how to approach that. Expect less certainty, and treat every finding as something to verify.
The successor test
The test that the transfer worked is that a successor can do the routine jobs unaided: deploy a small change, restore from a backup, renew what needs renewing, and find where each integration is configured. Ask them to try before the developer leaves, and keep the developer reachable for a defined period afterwards, agreed in writing. If a test fails, arrange a further session on that topic.
Where LATYNEX fits, and when it does not
If LATYNEX is the incoming team, we prepare the topic list, run the sessions as the person who drives, and turn the results into written documents you own. We are a remote, English-language vendor, and we agree one scope and one price in writing before work starts; see web application development.
We cannot promise that every piece of knowledge will be captured, because some only surfaces in use. This page is not a takeover service, and we are not the right fit if your only need is for a departing employee to record a video: you can do that yourself with the plan above.
Questions
How many sessions do we need?+
Enough to cover each topic separately. Splitting by topic gives each session a clear purpose and a written result, rather than one long conversation that loses detail.
Why should the successor drive?+
Because the places where they get stuck show exactly what knowledge was missing, while the developer is still there to supply it.
Should we record the sessions?+
With the developer's agreement, yes, and file the recordings where the team can find them. Keep passwords and keys out of the recording.
What if the developer will not or cannot take part?+
Then map and verify the system from the outside, and treat everything you learn as needing confirmation. The takeover assessment page describes how.
Does this guarantee complete knowledge capture?+
No. Some things only appear in use. The successor test shows what has been captured and what still needs a session.