What is the expected growth rate for TSMC's 28-nanometer manufacturing capacity in 2022 
 customer demand, we are confident that our N3E family will be another large and long-last node for TSMC. Finally, let me talk about our mature node capacity strategy. TSMC's strategy at a mature node is to work closely with our customers to develop a specialty technology solutions to meet customers' requirement and create differentiated and long-lasting value to customers.
We expect the multiyear industry makeup trend of 5G and HPC and the higher silicon content in many end devices, to drive increasing demand and mature node for certain specialty technologies. We forecast 28-nanometer will be the sweet spot for our embedded memory applications and our long-term structural demand at 28-nanometer to be supported by multiple specialty technologies. In support of our specialty technology strategies, we are expanding our 28-nanometer manufacturing capacity and size in China, Japan, and Taiwan. Our capacity expansion is based on customers' need, business opportunities, operating efficiency, and cost economic considerations.
We believe the expansion of our mature node capacity will enable us to better serve our customers' needs and reach global talents, and our differentiated specialty technology will enable us to capture the demand generated from the industry mega trend and deliver long-term profitable growth for our shareholders. This concluding our key message. Thank you for your attention.
Jeff Su
Thank you, C.C. This concludes our prepared remarks. [Operator instructions] Should you wish to raise your question in Chinese, I will translate it to English before our management answers your question. [Operator instructions] Now we will proceed to the Q&A session.
Our chairman, Dr. Mark Liu, will be the host.
Mark Liu -- Chairman
Hello, everyone. This is Mark Liu. I want to send my regards to every one of you during this pandemic and wish we have a happy and a successful 2022. Thank you.
Jeff Su
Thank you, Chairman. Let's begin the Q&A session now. Operator, can we please proceed with the first caller on the line?
Questions & Answers:
Operator
The first to ask questions, Randy Abrams from Credit Suisse.
Randy Abrams -- Credit Suisse -- Analyst
OK. Yes. Thank you. Congratulations on the results and the outlook and margins.
First question on the growth outlook. When we compare the growth expectation mid- to high 20% versus if I roll up the fabless and IDM customers, they're about mid-teens growth. So your outgrowth looks much wider than most peers. Could you break it down a bit more, the factors between share gain, pricing moves? And also if there's any component of inventory build in there?
Jeff Su
OK. Randy, let me summarize your first question. I believe your question is referring to the 2022 growth outlook. And Randy --
Randy Abrams -- Credit Suisse -- Analyst
That's right.
Jeff Su
Right. And so Randy is saying, TSMC's guidance of mid- to high 20s percentage, his calculation show that the fabless industry is growing maybe around mid-teens. So we will outgrow the foundry -- sorry, the fabless. And so he is wondering what is driving this outgrowth.
Is it share gain? Pricing? Are there other factors, such as inventory build, into this? And if we can share.
C.C. Wei -- Chief Executive Officer
OK. Let me answer the question. This is C.C. Wei.
Actually, the growth in 2022 is all the above you just mentioned. It's a share gain, it's the pricing and also its a unit growth. Did I answer your question?
Randy Abrams -- Credit Suisse -- Analyst
Yes, mostly. And maybe just a quick -- two quick follow-ups to that. If you could break the growth by platform and if you could indicate just how much -- like how much do you think your customers want to put in place for inventory? Like how big a component do you think that factor is?
Jeff Su
OK. So Randy's follow-up is, can we give our 2022 growth by platform outlook? And then how much of a role is inventory build plan in this growth?
Wendell Huang -- Vice President and Chief Financial Officer
Randy, this is Wendell. Let me answer the platform question. In 2022, we expect the HPC and automotive 
 customer demand, we are confident that our N3E family will be another large and long-last node for TSMC. Finally, let me talk about our mature node capacity strategy. TSMC's strategy at a mature node is to work closely with our customers to develop a specialty technology solutions to meet customers' requirement and create differentiated and long-lasting value to customers.
We expect the multiyear industry makeup trend of 5G and HPC and the higher silicon content in many end devices, to drive increasing demand and mature node for certain specialty technologies. We forecast 28-nanometer will be the sweet spot for our embedded memory applications and our long-term structural demand at 28-nanometer to be supported by multiple specialty technologies. In support of our specialty technology strategies, we are expanding our 28-nanometer manufacturing capacity and size in China, Japan, and Taiwan. Our capacity expansion is based on customers' need, business opportunities, operating efficiency, and cost economic considerations.
We believe the expansion of our mature node capacity will enable us to better serve our customers' needs and reach global talents, and our differentiated specialty technology will enable us to capture the demand generated from the industry mega trend and deliver long-term profitable growth for our shareholders. This concluding our key message. Thank you for your attention.
Jeff Su
Thank you, C.C. This concludes our prepared remarks. [Operator instructions] Should you wish to raise your question in Chinese, I will translate it to English before our management answers your question. [Operator instructions] Now we will proceed to the Q&A session.
Our chairman, Dr. Mark Liu, will be the host.
Mark Liu -- Chairman
Hello, everyone. This is Mark Liu. I want to send my regards to every one of you during this pandemic and wish we have a happy and a successful 2022. Thank you.
Jeff Su
Thank you, Chairman. Let's begin the Q&A session now. Operator, can we please proceed with the first caller on the line?
Questions & Answers:
Operator
The first to ask questions, Randy Abrams from Credit Suisse.
Randy Abrams -- Credit Suisse -- Analyst
OK. Yes. Thank you. Congratulations on the results and the outlook and margins.
 First question on the growth outlook. When we compare the growth expectation mid- to high 20% versus if I roll up the fabless and IDM customers, they're about mid-teens growth. So your outgrowth looks much wider than most peers. Could you break it down a bit more, the factors between share gain, pricing moves? And also if there's any component of inventory build in there?
Jeff Su
OK. Randy, let me summarize your first question. I believe your question is referring to the 2022 growth outlook. And Randy --
Randy Abrams -- Credit Suisse -- Analyst
That's right.
Jeff Su
Right. And so Randy is saying, TSMC's guidance of mid- to high 20s percentage, his calculation show that the fabless industry is growing maybe around mid-teens. So we will outgrow the foundry -- sorry, the fabless. And so he is wondering what is driving this outgrowth.
Is it share gain? Pricing? Are there other factors, such as inventory build, into this? And if we can share.
C.C. Wei -- Chief Executive Officer
OK. Let me answer the question. This is C.C. Wei.
Actually, the growth in 2022 is all the above you just mentioned. It's a share gain, it's the pricing and also its a unit growth. Did I answer your question?
Randy Abrams -- Credit Suisse -- Analyst
Yes, mostly. And maybe just a quick -- two quick follow-ups to that. If you could break the growth by platform and if you could indicate just how much -- like how much do you think your customers want to put in place for inventory? Like how big a component do you think that factor is?
Jeff Su
OK. So Randy's follow-up is, can we give our 2022 growth by platform outlook? And then how much of a role is inventory build plan in this growth?
Wendell Huang -- Vice President and Chief Financial Officer
Randy, this is Wendell. Let me answer the platform question. In 2022, we expect the HPC and automotive 