CI/CD Improvement Scenario

	A	B	C	D	E	F	G	H	I
1	CI/CD Improvement Scenario
2		(First-order impacts only, assuming very rough CircleCI pricing)
3
4		Assumptions	Value	Unit	Notes
5		Number of Devs	100	developers
6		PRs / Week / Dev	3	PR / week / dev
7		Turns / PR	3	turns / PR
8		Average Dev Salary	$125,000.00	$ / year
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10		CI $ / user / month	$15.00	$ / user / month	($15 / month over 3 users)
11		CI misc credits / build	200	credits / build	(docker layer caching)
12		CI credits / min	20	credits / min	(assuming CCI large)
13		CI $ / credit	$0.0006	$ / credit
14		CI $ / min	$0.0120	$ / min
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16		Calculated
17		Merge Builds / Week	300	merge builds / week	(assume every PR is merged)
18		PR Builds / Week	900
19		Total Builds / Week	1200
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21		Dev Salary / Minute	$0.24	$ / min
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23		CI User Cost / Week	$339.23		user fees
24		CI Other Cost / Week	$144.00		other build fees
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27		Weekly Costs		Minutes / Build		20 min baseline
28				40	30	20	15	10	5
29		Variable Dev Costs		$11,415.53	$8,561.64	$5,707.76	$4,280.82	$2,853.88	$1,426.94
30		Variable Build Costs		$576.00	$432.00	$288.00	$216.00	$144.00	$72.00
31		Fixed Build Costs		$483.23	$483.23	$483.23	$483.23	$483.23	$483.23
32		Total Weekly CI Cost		$12,474.76	$9,476.87	$6,478.99	$4,980.05	$3,481.11	$1,982.17
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34		CI Improvement Cost of Delay ($/week)		-$5,995.76	-$2,997.88	$0.00	$1,498.94	$2,997.88	$4,496.82
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36		Annual Cost of Delay		-$311,779.65	-$155,889.83	$0.00	$77,944.91	$155,889.83	$233,834.74
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