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Feature<\/th>\n	EC2 (Elastic Compute Cloud)<\/strong><\/th>\n	Lambda<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Type<\/strong><\/td>\n	Virtual server-based<\/td>\n	Serverless<\/td>\n<\/tr>\n
Control<\/strong><\/td>\n	Full control over OS and software<\/td>\n	No server management required<\/td>\n<\/tr>\n
Best for<\/strong><\/td>\n	Long-running, complex apps<\/td>\n	Short-lived, event-driven functions<\/td>\n<\/tr>\n
Billing<\/strong><\/td>\n	Based on usage time (hour\/second)<\/td>\n	Based on invocations and execution time<\/td>\n<\/tr>\n
Scaling<\/strong><\/td>\n	Manual or auto via Auto Scaling<\/td>\n	Fully automatic, scales instantly<\/td>\n<\/tr>\n
Security<\/strong><\/td>\n	User handles OS\/app\/network<\/td>\n	AWS handles infrastructure-level security<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \n <\/div>\n<\/div>\n<\/div>\n<\/div>\n \n When Should You Choose EC2?<\/h3>\n Go with EC2 when you:<\/p>\n \n \n Need persistent compute power<\/p>\n<\/li>\n \n Want full OS-level control<\/p>\n<\/li>\n \n Run complex dependencies or custom stacks<\/p>\n<\/li>\n \n Require applications with long-running processes<\/p>\n<\/li>\n<\/ul>\n \n When Lambda is a Better Fit<\/h3>\n Pick Lambda if you:<\/p>\n \n \n Build event-driven apps (e.g., image uploads, API calls)<\/p>\n<\/li>\n \n Need auto-scaling without manual intervention<\/p>\n<\/li>\n \n Have sporadic workloads<\/p>\n<\/li>\n \n Want to save costs on short jobs<\/p>\n<\/li>\n<\/ul>\n \n Top AWS EC2 vs Lambda Interview Questions<\/h3>\n Let\u2019s get you interview-ready!<\/p>\n \n 1. What\u2019s the difference between EC2 and Lambda?<\/strong><\/h4>\n Answer:<\/strong> EC2 gives you virtual machines with OS-level control. Lambda is serverless\u2014just upload code, and AWS runs it when triggered. EC2 is ideal for heavy lifting; Lambda for lightweight, reactive tasks.<\/p>\n \n 2. When would you choose EC2 over Lambda?<\/strong><\/h4>\n Answer:<\/strong> Use EC2 for apps needing persistent connections, complex setups, or long-term runtime. Use Lambda for lightweight, short-lived operations with fluctuating traffic.<\/p>\n \n 3. How do EC2 and Lambda handle scaling?<\/strong><\/h4>\n Answer:<\/strong> EC2 uses Auto Scaling Groups you configure. Lambda scales automatically behind the scenes with no setup needed.<\/p>\n \n 4. Explain the pricing model differences.<\/strong><\/h4>\n Answer:<\/strong> EC2: Pay for the instance uptime, whether it\u2019s busy or idle. Lambda: Pay per request and compute time only\u2014super cost-efficient.<\/p>\n \n 5. How does security differ?<\/strong><\/h4>\n Answer:<\/strong> EC2: You secure OS, app, and network layers. Lambda: AWS secures infrastructure; you focus on securing your code and input\/output data.<\/p>\n \n FAQs<\/h3>\n Q: Can EC2 and Lambda be used together?<\/strong> Absolutely! Many architectures combine EC2\u2019s power with Lambda\u2019s flexibility.<\/p>\n Q: Is Lambda always cheaper than EC2?<\/strong> Not always. For long-running workloads, EC2 may be more cost-effective.<\/p>\n Q: Can I SSH into Lambda like EC2?<\/strong> Nope. Lambda doesn\u2019t expose a host environment. EC2 gives full SSH access.<\/p>\n \n Final Thoughts<\/h3>\n Understanding AWS EC2 vs Lambda<\/strong> is vital for anyone navigating AWS interviews or deploying real-world cloud applications. EC2 shines with control and persistence; Lambda wins on simplicity and scaling. With these differences clear and key questions practiced, you\u2019ll crush that next AWS interview!<\/p>\n \n Want to Learn More?<\/h3>\n \n \n Official AWS EC2 Documentation<\/a><\/p>\n<\/li>\n \n AWS Lambda Documentation<\/a><\/p>\n<\/li>\n \n FreeCodeCamp: Serverless Explained<\/a><\/p>\n<\/li>\n<\/ul>\n $\"IT$ <\/a><\/h3>\n Consult Us Form:<\/strong> Click Here<\/a><\/p>\n Contact Us :<\/strong>\u00a0WhatsApp<\/strong><\/a><\/p>\n Register now for a FREE consultation<\/strong><\/a> to take your career to the next level<\/p>\n For Mail: Click Here<\/a> \| For More Info : Click Here<\/a><\/p>\n<\/body>","protected":false},"excerpt":{"rendered":" If you\u2019re stepping into cloud computing interviews or just brushing up your AWS know-how, understanding the battle of AWS EC2 vs Lambda is a must. They\u2019re both powerful services from Amazon Web Services\u2014but with wildly different use cases. Let\u2019s dig into what sets them apart and prep you with some top-tier interview questions. Key Differences […]<\/p>\n","protected":false},"author":1,"featured_media":2097,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"_joinchat":[],"footnotes":""},"categories":[880],"tags":[817,884,883,809,886,818,881,885,882,870],"class_list":["post-2096","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aws-job-support","tag-aws","tag-aws-ec2","tag-aws-lambda","tag-cloud-computing","tag-cloud-infrastructure","tag-devops","tag-ec2","tag-interview-preparation","tag-lambda","tag-serverless"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.kbstraining.com\/blog\/wp-content\/uploads\/2025\/05\/AWS-EC2-vs-Lambda-Key-Differences-and-Interview-Questions-KBS-Training.png?fit=1280%2C720&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/posts\/2096","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/comments?post=2096"}],"version-history":[{"count":0,"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/posts\/2096\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/media\/2097"}],"wp:attachment":[{"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/media?parent=2096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/categories?post=2096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kbstraining.com\/blog\/wp-json\/wp\/v2\/tags?post=2096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

Top AWS EC2 vs Lambda Interview Questions<\/h3>\nLet\u2019s get you interview-ready!<\/p>\n\n

Top AWS EC2 vs Lambda Interview Questions<\/h3>\n
Let\u2019s get you interview-ready!<\/p>\n
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