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Marketing Academy · Field Work●Paid Ads
All projects·From: Bidding Strategies
CoreSimulation· 35 minutes

The Learning Period Gauntlet: Surviving the First 4 Weeks of Smart Bidding

Instacart

Objective: Navigate a simulated 4-week Target CPA rollout for an Instacart-style grocery-delivery Search campaign, deciding at each checkpoint whether to hold, panic-switch, or tighten the target, with consequences that mirror the lesson's real thresholds.

You just switched Instacart's 'Same-Day Grocery Delivery' Search campaign from Manual CPC to Target CPA, target set at your $18 historical average CPA. The campaign now enters its learning period.

At each checkpoint, decide whether the data is enough to act on yet, and whether any action is even needed.

Before you start

What you'll need

Free path (everything below is enough to finish)

Google Ads
FreeThe dashboard this simulation mirrors; practice reading real learning-period data here after the simulation

Free to view for any account owner or manager

Google Sheets
FreeLog each checkpoint's CPA and conversion count to track the trend across the 4 weeks

Free, no account required

The process

Simulation

Day 5, first look

Day 5 of an expected 28

You switched the campaign to Target CPA five days ago, target set at your $18 historical average. You open the dashboard for the first time since the switch.

Sample output
Same-Day Grocery Delivery, Search · Target CPA $18 · Day 5 of 28

  Conversions        9
  Cost per conv      $31.00
  Impressions         14,200
  CTR                 4.1%
Spend to date:$1,240 of $6,000 monthly budget
Budget remaining:$4,760

CPA is running 72% over target after just 5 days. What do you do?

Run this for real insteadOptional

The simulation above is a complete project on its own, free, no account or spend required. This is only for learners who want to test the same decisions against a real live account.

Minimum spend:$3,000/month
Minimum duration:28 days
Setup steps
  1. Confirm conversion tracking fires only on high-value actions before switching from Manual CPC
  2. Set the initial Target CPA at or near your trailing 30-day average CPA, not your goal
  3. Calendar a check-in for day 12 and day 28, not sooner
Check-in schedule: Log CPA and conversion volume at day 5, day 12, and day 28; only act on the day-28 read

Final deliverable

A completed decision log across all 4 checkpoints (day 5, day 12, week 4, plus any restart) with the verdict and lesson reference for each choice made.

See a reference example
Sample output
PolicyBazaar, Target CPA learning-period log (excerpt)

Day 5:   Held. CPA $34 vs $20 target. Verdict: optimal.
Day 12:  Held. CPA $23.80. Verdict: optimal.
Week 4:  Tightened target 12%, to $17.60. Verdict: optimal.
Outcome: stable CPA reduction with no volume collapse.

Success criteria

You're done when you can:

  • Holds through both early checkpoints without reverting or tightening prematurely
  • Applies a 10-15% tightening step, not a large jump, once the learning period completes at week 4