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DevOps vs SRE vs Platform Engineer: तुमच्यासाठी कोणती भूमिका?

By Ravindra Bagale, DevOps trainer · LinkedIn · Published: 28 October 2026 · Last updated: 28 October 2026

JD मध्ये DevOps, SRE आणि Platform Engineer मिसळतात. समान cloud, वेगळा daily focus. हा guide duties, tools आणि interview तुलना करतो.

Language: English · मराठी · हिंदी

पदव्या का गोंधळ करतात

Infosys, TCS, Amazon, Google मध्ये समान tools तीन नावांखाली येतात.

Why: Title marketing आहे; रोजचे काम ownership आहे. What: तीन भूमिका, वेगवेगळे primary pain. How: खालील duties वाचा आणि story जुळवा.

Concept 1: DevOps — change ship करा

Why: Business ला weekend panic नको. What: CI/CD, Docker/K8s, IaC, basic monitoring. How: Commit पासून environment पर्यंत pipeline own करा.

Example 1: Pipeline status stand-in

Type this:

printf '%s\n' 'stage=test' 'result=SUCCESS' > /tmp/ci-status.txt
cat /tmp/ci-status.txt

You will see:

stage=test
result=SUCCESS

What it means: Green stage = tests चालले.

Example 2: Release tag

Type this:

cd /tmp && mkdir -p ship-lab && cd ship-lab
printf 'v1\n' > VERSION
git init -q -b main
git add VERSION
git -c user.email=a@b.c -c user.name=Lab commit -q -m "release: 1.0.0"
git tag -a v1.0.0 -m "ship 1.0.0"
git tag -l

You will see:

v1.0.0

What it means: DevOps release tags आणि deploy jobs own करतो.

Example 3: Artifact

Type this:

test -f /tmp/ship-lab/VERSION && echo ARTIFACT_OK

You will see:

ARTIFACT_OK

What it means: Shipping = known build.

Concept 2: SRE — promise ठेवा

Why: Flipkart sale किंवा Netflix-scale वर users errors/latency पाहतात. What: SLI/SLO, error budget, toil, incidents. How: एक SLO ठरवा, मोजा, budget जळतानाच page करा.

Example 4: Availability

Type this:

python3 -c "ok=995; total=1000; print(round(100*ok/total,2))"

You will see:

99.5

What it means: SLO 99.9 असेल तर 99.5 budget जाळते.

Example 5: Budget left

Type this:

python3 -c "slo=99.9; actual=99.5; budget=100-slo; used=slo-actual; print('budget_pct_left', round(100*(budget-used)/budget,1))"

You will see:

budget_pct_left 60.0

What it means: SRE budget left मध्ये बोलतो.

Example 6: Toil

Type this:

printf '%s\n' 'restart nginx' 'restart nginx' 'restart nginx' | sort | uniq -c

You will see:

3 restart nginx

What it means: तीन सारखे tickets = toil.

Concept 3: Platform — shared path

Why: वीस teams नी वीस Jenkinsfiles काढू नयेत. What: Templates, golden paths, self-service. How: एक paved road द्या: repo + pipeline + envs.

Example 7: Tenants

Type this:

printf '%s\n' team-a team-b team-c > /tmp/platform-tenants.txt
wc -l < /tmp/platform-tenants.txt

You will see:

3

What it means: यश = अनेक teams एका path वर.

Example 8: Golden path

Type this:

printf '%s\n' 'repo-template=yes' 'ci-template=yes' 'dev-env=yes' 'prod-gate=yes' > /tmp/golden.txt
cat /tmp/golden.txt

You will see:

repo-template=yes
ci-template=yes
dev-env=yes
prod-gate=yes

What it means: Defaults, wiki dump नाही.

Example 9: Tickets saved

Type this:

python3 -c "manual=12; after=3; print('tickets_saved', manual-after)"

You will see:

tickets_saved 9

What it means: Platform = कमी tickets.

Concept 4: Fit निवडा

Why: चुकीचे title सहा महिने वाया. What: Skills + pager pain + interview focus. How: तीन bullets लिहा; सर्वात मजबूत ठेवा.

Example 10: Skill map

Type this:

printf '%s\n' 'linux=strong' 'ci=medium' 'slo=weak' 'k8s=medium' > /tmp/skill-map.txt
grep strong /tmp/skill-map.txt

You will see:

linux=strong

What it means: Strength पासून सुरू.

Example 11: Focus

Type this:

printf '%s\n' 'DevOps: pipeline debug' 'SRE: incident + SLO' 'Platform: template design'

You will see:

DevOps: pipeline debug
SRE: incident + SLO
Platform: template design

What it means: JD च्या title नुसार सराव.

Example 12: Pitch

Type this:

printf '%s\n' 'I own CI from commit to ECS and cut failed deploys by half in a lab.'

You will see:

I own CI from commit to ECS and cut failed deploys by half in a lab.

What it means: Ownership > buzzwords.

सारांश तक्ता

Infosys account

Title DevOps असेल तरी काम Jenkins+Linux असू शकते. On-call विचारा.

Check yourself (quiz)

Title = ownership. DevOps ship करतो. SRE promise राखतो. Platform road तयार करतो. Did you understand? Let us try it once more.